Informatica 601 FAQ

Informatica 601 FAQ’sDownloaded from http://www.geekinterview.com/Interview-Questions/Data-Warehouse/Informatica/page60

1. What happens when the session stops half way while loading? How to join a flat file without matchinWhat happens when the session stops half way while loading? How to join a flat file without matching keys in RDBMS?

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Asked by: balan

(Answers: 2) Read / Answer

2. Session variables - what are they exactly Subscribe

What are session variables and session parameters. Are the mapping variables and mapping parameters one and the same. I think it is not . Asked by: sarun5


3. Joiner Transformation Master Detail Subscribe

Suppose you have 2000 records in one table and 12000 in another which one you will consider as master and detail? Asked by: sarun5

Latest Answer: We will consider the one with lesser number of records as master as with this approach the data to b... Last Updated By Sreeya on February 19, 2008


4. Transformation to Load 5 Flat files Subscribe

What is the method of loading 5 flat files of having same structure to a single target and which transformations will you use? Asked by: sarun5

Latest Answer: We can use the Union Transformation to carry out the above functionality.... Last Updated By Sreeya on February 19, 2008


5. Mapping variable – Mapping Parameter Subscribe

What will happen when Mapping variable and Mapping parameter in Informatica is not defined or given? Where do you use mapping variable and mapping parameter? Asked by: sarun5

Latest Answer: Thanks Deepak. But does it take any null values or any default values to run the mapping. ... Last Updated By sarun5 on February 18, 2008


6. hi... this was asked in acccenture interview can anyone plz tell me the answerwhat is the differenchi... this was asked in acccenture interview can anyone plz tell me the answerwhat is the difference between informatica 7.1 and 8.1

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Asked by:


7. how do you use Normalizer to convert columns into rows ? Subscribe

Asked by: VIRAL

Latest Answer: Using Normalizer, in the normalizer properties we can add coloumns and for a coloumn we can specify ... Last Updated By Deepak Rajkumar on February 18, 2008


8. Fact Table - Grain Facts Subscribe

What are Grain Facts? Asked by: sarun5

Latest Answer: Facts are tables that refer to the dimension tables for details. Facts always hold the foreign keys.... Last Updated By Deepak Rajumar on February 18, 2008


9. We can insert or update the rows without using the update strategy. Then what is the Subscribe

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necessity of We can insert or update the rows without using the update strategy. Then what is the necessity of the update strategy?

Asked by: cvgopal123


10. what is DTM process? Subscribe

Asked by: rekha v s

Latest Answer: Load manager Process: Starts the session, creates the DTM process, and sends post-session email whe... Last Updated By dl_mstr on February 10, 2008


11. hw to work with pmcmd on windows platform Subscribe

Asked by: Ramesh

Latest Answer: C:-->Program Files-->Informatica PowerCenter 7.1.3-->Server-->bin-->pmcmd.exe... Last Updated By dl_mstr on February 10, 2008


12. interview questiontell me what would the size of ur warehouse project? Subscribe

Asked by: shahjahan

Latest Answer: You can answer this question as the number of facts and dimension in ur warehouseFor Example: Insura... Last Updated By dl_mstr on February 10, 2008


13. what is constraint based error? how ll u clarify it? Subscribe

Asked by: channu

Latest Answer: when data from a single source needs to be loaded into multiple targets And multiple target ... Last Updated By dl_mstr on February 10, 2008


14. what is referential Intigrity error? how ll u rectify it? Subscribe

Asked by: channu

Latest Answer: You have set the session for constraint-based loading, but the PowerCenter Server is unable to det... Last Updated By dl_mstr on February 10, 2008


15. In my source table 1000 rec's are there. I want to load 501 rec to 1000 rec into my Target tabIn my source table 1000 rec's are there. I want to load 501 rec to 1000 rec into my Target table ?

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Asked by: phanimv


16. 1)What are the various test procedures used to check whether the data is loaded in the back end, p1)What are the various test procedures used to check whether the data is loaded in the back end, performance of the mapping, and quality of the data loaded in INFORMATICA.2) What are the common problems developers face while ETL development

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Asked by: phanimv


17. what is the logic will you implement to load the data in to one fact from 'n' number of

what is the logic will you implement to load the data in to one fact from 'n' number of dimension tables.

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Asked by: phanimv


18. What are all the new features of informatica 8.1? Subscribe










































Asked by: geetham

Latest Answer: Power Center 8 release has "Append to Target file" feature.ava transformation is introduce... Last Updated By dl_mstr on February 10, 2008


19. How to partition the Session?(Interview question of CTS) Subscribe

Asked by: vijitha

Latest Answer: By default when we create the session, workflow creates pass-through partition points at Source Qu... Last Updated By dl_mstr on February 10, 2008


20. what is session recovery? Subscribe


Latest Answer: If the recover option is not set and 10,000 records are committed then delete the record from the ta... Last Updated By dl_mstr on February 10, 2008


21. What is Dataware house key? Subscribe

Asked by: prasadw

Latest Answer: Surrogate key is know as datawarehouse key. Surrogate key is used as a unique key in warehouse where... Last Updated By dl_mstr on February 09, 2008


22. write a query to retrieve the latest records from the table sorted by version(scd). Subscribe

Asked by: ravi214u

Latest Answer: select business_key,max(version) from tablename group by business_key... Last Updated By dl_mstr on February 09, 2008


23. Informatica sessions Subscribe

what is the difference between a session and a task? Asked by: Meenavenkat

Latest Answer: Seesions : Set of instructions to run a mappingTask: session is type of task. other than that inform... Last Updated By dl_mstr on February 08, 2008


24. Assignment task in informatica Subscribe

What is Assignment task in informatica? In what situation this task will be executed? Where this task exits? Asked by: kasisarath

Latest Answer: The Assignment task allows you to assign a value to a user-defined workflow variable. To use an Ass... Last Updated By mdahiya81 on February 06, 2008


25. what are the main issues while working with flat files as source and as targets ? Subscribe

Asked by: satya

Latest Answer: We need to specify correct path in the session , and mension either that file is 'direct' or... Last Updated By rasmi on February 06, 2008


26. what is a source qualifier?- Subscribe

It represents all data queried from the source. Latest Answer: This is the base transformation. You cannot opertae directly on Source, so Informatica provide this ... Last Updated By Sant_parkash on January 30, 2008


27. What is a Shortcut and What is the difference between a Shortcut and a Reusable Transformation?

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Asked by: pradeepkv

Latest Answer: A Reusable Transformation can only be used with in the folder. but a shortcut can be used anywhere i... Last Updated By Sant_parkash on January 29, 2008


28. What is difference between cbl (constaint based commit) and target based commit?When we use cbl?

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Asked by: davankumar

Latest Answer: CBL means constaraint based loading.the data was loaded into the the target table based on the Const... Last Updated By chandumedum on January 25, 2008


29. what types of Errors occur when you run a session, can you describe them with real time example

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Asked by: mahesh babu malepati

Latest Answer: There are several errors you will get. Couple of them are1. if informatica failed to connect d... Last Updated By kasisarath on January 24, 2008


30. What is key factor in BRD? Subscribe

Asked by: Pvnvarma

Latest Answer: could you please eloborate what is BRD... Last Updated By kasisarath on January 24, 2008


31. How to implement de-normalization concept in Informatica Mappings? Subscribe

Asked by: [email protected]

Latest Answer: User Normalizer. This transformation used to normalize data.... Last Updated By kasisarath on January 24, 2008


32. What is intermediate task in informatica? In what situation this task will be executed?

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Asked by: kasisarath


33. How many types of facts and what are they? Subscribe

Asked by: Priya

Latest Answer: 1. Regular Fact - With numeric values2.Factless Fact - Without numeric values... Last Updated By senthilkar on January 22, 2008


34. Performance tuning in Informatica? Subscribe

The goal of performance tuning is optimize session performance so sessions run during the available load window for the Informatica Server.Increase the session performance by following. The performanc Latest Answer: Hey, Thank You so much for the information. That was one of the best answers I have read on this web... Last Updated By ankitmohansharma on January 12, 2008


35. How to append records in flat file using Informatica?For eg : In Datastage we can append the recorHow to append records in flat file using Informatica?For eg : In Datastage we can append the records in flat file(sequential file) using the options i) overwrite the existinf file.ii) Append the existing file.

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Asked by: thiyagarajanc










































36. How to append the records in flat file(Informatica) ? Where as in Datastage we have the options i) How to append the records in flat file(Informatica) ? Where as in Datastage we have the options i) overwrite the existing fileii) Append existing file

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Asked by: Thiyagarajan


37. how to get the first 100 rows from the flat file into the target? Subscribe

Asked by: sarath

Latest Answer: Use a sequence generator set properties as reset and then use filter, put condition as NEXTVAL... Last Updated By dl_mstr on December 30, 2007


38. Explain pmcmd? Subscribe

Asked by: bashudha

Latest Answer: hi PMCMD means program command line utility. &... Last Updated By sridhar39 on December 29, 2007


39. Explain Session Recovery Process? Subscribe

Asked by: bashudha

Latest Answer: hi, when the informatica server starts a recovery session it reads the&... Last Updated By sridhar39 on December 29, 2007


40. in which particular situation we use unconnected lookup transformation? Subscribe

Asked by: shahjahan

Latest Answer: hi, both unconnected and connected will provide single output. if it is the c... Last Updated By sridhar39 on December 28, 2007


41. parameter file Subscribe

how to create parameter file and how to use it in a mapping explain with example Asked by: pavankumarpk

Latest Answer: Please place your parameter file in the server "srcfiles" with data in it.In mapping desig... Last Updated By sivavin1 on December 28, 2007


42. aggregator transformation Subscribe

how does sorted input works in aggregator transformation Asked by: sateesh.ra

Latest Answer: Aggregator transformation performance can be improved by using the sorted input option. When yo... Last Updated By Vani_AT on December 28, 2007


43. Informatica Working with flat files Subscribe

how can we display delimiters beside column names of target flat file? Asked by: sateesh.ra

Latest Answer: while creating the targets using flat files we will get a options to specify whether the flat file i... Last Updated By komalahanumantharao on December 26, 2007


44. How many repositories can we create in Informatica?What is aggregate awareness?What are parallel quHow many repositories can we create in Informatica?What is aggregate awareness?What are parallel queries and query hints

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Asked by: chsrikanth15


45. How can we delete duplicate rows from your source in mapping without using SELECT DISTINCT option iHow can we delete duplicate rows from your source in mapping without using SELECT

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DISTINCT option in source qualifier?

Asked by: shaju


46. What is Target Update Override? What is the Use ? Subscribe

Asked by: ramesh

Latest Answer: target update override it is also like souce qualifier override,target update override is use ful to... Last Updated By seshasai.n on December 25, 2007


47. When we are having data in the target table and there are no primary key or foreign key mentioned iWhen we are having data in the target table and there are no primary key or foreign key mentioned in the target table then how will you update as well as insert the data?

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Asked by: madhu2732


48. 1.how to enter same record twice in target table? give me syntax.2. how to get particular record fr1.how to enter same record twice in target table? give me syntax.2. how to get particular record from the table in informatica?3.how to create primary key only on odd numbers?4. how to get the records starting with particular letter like A in informatica?

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Asked by: shivaleela


49. How can you join two tables without using joiner and sql override transformations? Subscribe

Asked by: Saumya

Latest Answer: If the sources are homogenous, we use source qualifierif the sources have same structure we can use ... Last Updated By senthilkar on December 17, 2007


50. Can u start a batches with in a batch? Subscribe

U can not. If u want to start batch that resides in a batch,create a new independent batch and copy the necessary sessions into the new batch. Latest Answer: Logically Yes, we can craete worklets and call the batch... Last Updated By dl_mstr on December 16, 2007

(Answers: 2) Read / Answe

51. Can u copy the batches? Subscribe

NO Latest Answer: Yes, I think workflows can be copied from one folder/repository to another... Last Updated By dl_mstr on December 16, 2007


52. What is the difference between SQL Overriding in Source qualifier and Lookup transformation?

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Asked by: Naveed

Latest Answer: If you write a query in source qualifier(to override using sql editor) and press validate you can re... Last Updated By Hemanth Kumar M.N on December 15, 2007


53. Informatica : set statement in update Subscribe

Need to update the existing records,The record which is coming for update should be inserted and also the previous record's one column must be modified. i have used look up to look up the data.used ro Asked by: buvanalogu

Latest Answer: Actually what need to be done here is:You need to use two update strategy transformation




































just before... Last Updated By anu_v_iitd on December 13, 2007

54. What is source qualifier transformation? Subscribe

When U add a relational or a flat file source definition to a maping,U need to connect it to a source qualifer transformation.The source qualifier transformation represnets the records that the inform Latest Answer: Source Qualifier is a transformation with every source definiton if the source is Relational Da... Last Updated By jaber on December 09, 2007


55. What are tracing levels in transformation? Subscribe

Asked by: jagan

Latest Answer: Tracing level in the case of informatica specifies the level of detail of information that can be re... Last Updated By prabhat007 on December 08, 2007


56. What are Meta Data Extenstions used in an informatica mapping? What is the significance,usage and hWhat are Meta Data Extenstions used in an informatica mapping? What is the significance,usage and how informatica handles them?

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Asked by: Thananjayan


57. In your mapping using sequence generator transformation, the limitation of the transformation is itIn your mapping using sequence generator transformation, the limitation of the transformation is it generates key values only around 2 million. If it is more than 3 million records are there in your source, how will you generate key values and load into target.

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Asked by: Chandrashekhara Varma


58. why do we need lookup sql override? Do we write sql override in lookup with special aim?

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Asked by: loosecontrol

Latest Answer: Lookup override can be used to get some specific records(using filters in where clause) from th... Last Updated By ask_kaushik on December 06, 2007


59. Informatica union transformation Subscribe

What is the practical use of a union transformation? Asked by: malleka

Latest Answer: That was the description....practical use would be like : if you have 3 different sources which retu... Last Updated By ask_kaushik on December 06, 2007


60. How many types of TASKS we have in Workflomanager? What r they? Subscribe

Asked by: channu

Latest Answer: We have Session,Command and Email tasksCheers,Thana... Last Updated By Thananjayan on December 06, 2007


61. What is the size of data mart? Subscribe

Asked by: bashudha

Latest Answer: Hi,Data mart is a part of the data warehouse.for example In an organization we can manage Employee p... Last Updated By Thananjayan on December 06, 2007







































62. Repository deletion Subscribe

what happens when a repository is deleted?If it is deleted for some time and if we want to delete it permanently?where is stored (address of the file) Asked by: adhika

Latest Answer: repository is stored in database ,go in repository admin console right click on repository the... Last Updated By sandeep_sajjan on December 03, 2007


63. Informatica objects File Format Subscribe

What is the file extension and format of the files for the Informatica objects like Mappings, sessions etc in the repository ? Asked by: Rambabu.Gali

Latest Answer: They are stored in xml... Last Updated By xingoflife on December 01, 2007


64. how to use the shared cache feature in look up transformation Subscribe

Asked by: sai kiran

Latest Answer: Instead of creating multiple cache files informatica server creates only one cache file for all the ... Last Updated By Rambabu.Gali on November 27, 2007


65. what are the steps follow in performance tuning ? Subscribe

Asked by: narsimhareddy

Latest Answer: Bottle neck means drawbacks or problems... Last Updated By J.David Sukeerthi Kumar on November 26, 2007


66. In case of use of dynamic lookup cache in a lookup transformation, the lookup cache gets updated fiIn case of use of dynamic lookup cache in a lookup transformation, the lookup cache gets updated first and then the target table. What happens if the target table rejects a row after it is updated in the Cache?

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Asked by: Savitha


67. In which condtions we can not use joiner transformation(Limitaions of joiner transformation)?

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Both pipelines begin with the same original data source. Both input pipelines originate from the same Source Qualifier transformation. Both input pipelines originate from the same Normalizer transform Latest Answer: We cannot use joiner transformation in the following two conditions:-1. When our data comes through ... Last Updated By divakar on November 24, 2007


68. What is the use of Shared Folder? Subscribe

Asked by: ramesh

Latest Answer: The Objects stored in the shared folder can be shared by the global users.I mean we can restrict one... Last Updated By Ram on November 24, 2007


69. What is Informatica basic data flow? Subscribe

Asked by: DIVYA

Latest Answer: INF Basic Data flow means Extraction, Transformation and Loading of data from Source to the target.C... Last Updated By Nick on November 20, 2007


70. what is the difference between reusable transformation and mapplets? Subscribe
































Asked by: prasad

Latest Answer: Reusable transformation is a single transformatin, which can be resuable & mapplet is a set of trans... Last Updated By ramesh raju on November 20, 2007


71. What is the functionality of Lookup Transformation Subscribe

(connected & un connected) Asked by: M.Maheswar Reddy

Latest Answer: Look up transformation compares the soure with specified target table,and forwarded the records... Last Updated By Thananjayan on November 17, 2007


72. How do you maintain Historical data and how to retrieve the historical data? Subscribe

Asked by: krishnareddysw

Latest Answer: You can maintain the historical data by desing the mapping using Slowly changing dimensions types.If... Last Updated By Thananjayan on November 17, 2007


73. Which transformation replaces the look up transformation? Subscribe

Asked by: karthumyl

Latest Answer: I hope The Joiner transformation is only for join the hetrogeneous sources.For Eg,when we use one so... Last Updated By Thananjayan on November 17, 2007


74. What are Dimensions and various types of Dimensions? Subscribe

set of level properties that describe a specific aspect of a business, used for analyzing the factual measures of one or more cubes, which use that dimension. Egs. Geography, time, customer and produc Latest Answer: Dimensions that change over time are called Slowly Changing Dimensions.Slowly Changing Dimensions ar... Last Updated By Thananjayan on November 17, 2007


75. What is pre-session and post-session? Subscribe

Asked by: guy.sridhar

Latest Answer: Pre-session:Before executing session, this pre-session command executesPost-session:After the comple... Last Updated By vizaik on November 13, 2007


76. which activities can be performed using the repository manager? Subscribe

Asked by: jangoan

Latest Answer: You can use the Repository Manager to perform the following tasks:Add or remove a repository.Work wi... Last Updated By vizaik on November 13, 2007


77. what is the difference between source qualifier transformation and filter transformation?

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Asked by: kiran

Latest Answer: A Source Qualifier transformation is the starting point in the mapping where in we are bringing the ... Last Updated By divakar on November 06, 2007


78. What r the diffrence between joiner transformation and source qualifier transformation?

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U can join hetrogenious data sources in joiner transformation which we can not achieve in source qualifier transformation. U need matching keys to join two relational sources in source qualifier trans Latest Answer: source qualifier is used for reading the data from the database where as joiner transformation is us... Last Updated By divakar on November 06, 2007


79. why do we use reusable sequencegenerator transformation only in mapplet? Subscribe

Asked by: shahjahan

Latest Answer: Hi,The solution provided is correct. I would like to add more information into it.Reusable Sequence ... Last Updated By mahindra on October 31, 2007


80. what is the economic comparision of all the Informatica versions? Subscribe

Asked by: sekhar emmanuel


81. What is one disadvantage of using an unconnected (sometimes called function mode) Lookup transformaWhat is one disadvantage of using an unconnected (sometimes called function mode) Lookup transformation? (1) If there is no match in the Lookup condition, the Informatica server returns a transformation error(2) A reusable unconnected Lookup can not have more than one instance in a mapping(3) An unconnected Lookup transformation does not support user-defined default values(4) An unconnected Lookup transformation does not support a static lookup cache

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Asked by: Santosh Bharamshetty


82. when we create a target as flat file and source as oracle.. how can i specify first rows as column when we create a target as flat file and source as oracle.. how can i specify first rows as column names in flat files...

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Asked by: cholleti


83. Eliminate Duplicate Records Subscribe

HiI am having 10000 records in flat file, in that there are 100 records are duplicate records..soo we want to eliminate those records..which is the best method we have to follow.RegardsMahesh Reddy Asked by: Maheswar Reddy

Latest Answer: You can put sorter transformation after source qualifier transformation and in sorter tranformation'... Last Updated By ravi on October 23, 2007


84. How to assign a work flow to multiple servers? Subscribe

I have multiple servers, I want to assign a work flow to multiple servers Asked by: SRIRAM N

Latest Answer: Informatica server will use Load manager process to run the workflow,load manager will doÂ assign t... Last Updated By krishna on October 19, 2007


85. What are the locks with respect to mappings?How do you manually lock or unlock the mappings for chaWhat are the locks with respect to mappings?How do you manually lock or unlock the mappings for chages?

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Asked by: N SRIRAM K


86. What is the default join that source qualifier provides? Subscribe






























Inner equi join. Latest Answer: Equijoin on a key common to the sources drawn by the SQ. ... Last Updated By halgai on October 08, 2007


87. How to read rejected data or bad data from bad file and reload it to target? Subscribe

Latest Answer: Design a trap to a file or table by the use of a filter transformation or a router transformation. R... Last Updated By halgai on October 07, 2007


88. Discuss the advantages & Disadvantages of star & snowflake schema? Subscribe

Latest Answer: Snowflakes are an addition to the Kimball Dimensional system to enable that system to handle hierarc... Last Updated By halgai on October 07, 2007


89. Can U use the maping parameters or variables created in one maping into another maping?

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NO. We can use mapping parameters or variables in any transformation of the same maping or mapplet in which U have created maping parameters or variables. Latest Answer: The scope of a mapping variable is the mapping in which it is defined. A variable Var1 defined in ma... Last Updated By Tapas on October 06, 2007


90. If i done any modifications for my table in back end does it reflect in informatca warehouse or mapIf i done any modifications for my table in back end does it reflect in informatca warehouse or maping desginer or source analyzer?

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NO. Informatica is not at all concern with back end data base.It displays u all the information that is to be stored in repository.If want to reflect back end changes to informatica screens, again u h


91. Suppose I have one source which is linked into 3 targets.When the workflow runs for the first time Suppose I have one source which is linked into 3 targets.When the workflow runs for the first time only the first target should be populated and the rest two(second and last) should not be populated.When the workflow runs for the second time only the second target should be populated and the rest two(first and last) should not be populated.When the workflow runs for the third time only the third target should be populated and the rest two(first and second) should not be populated.Could any one

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92. total how many joiner transformations needed to join 10 different sources.(recent tcs intervie w qtotal how many joiner transformations needed to join 10 different sources.(recent tcs intervie w question)

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Asked by: ramakrishna.chejerla


93. How do you migrate from one environment to another like development to production in Informatica. WHow do you migrate from one environment to another like development to production in Informatica. Which files do you move?

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Asked by: ebrahim































94. In what all transformations the mapplets cant be used in informatica?? Subscribe

Asked by: Ashish kumar singh malik

Latest Answer: The mapplets cant use these following transformationsxml source qualifiernormalizernon-reusable sequ... Last Updated By naina on October 06, 2007


95. What r the mapings that we use for slowly changing dimension table? Subscribe

Type1: Rows containing changes to existing dimensions are updated in the target by overwriting the existing dimension. In the Type 1 Dimension mapping, all rows contain current dimension data. Use the Latest Answer: SCD: Source to SQ - 1 mapping, SQ to LKP - 2 mapping, SQ_LKP to EXP - 3 Mapping, EXP to FTR... Last Updated By Rp on October 04, 2007


96. How can u recognise whether or not the newly added rows in the source r gets insert in the target ?How can u recognise whether or not the newly added rows in the source r gets insert in the target ?

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In the Type2 maping we have three options to recognise the newly added rows Version number Flagvalue Effective date Range


97. Can we revert back reusable transformation to normal transformation? Subscribe

Asked by: anil

Latest Answer: I think if the transformation is created in Mapping designer and make it as reusable then we ca... Last Updated By Sree.nivas on October 01, 2007


98. inteview questionwhy do u use a reusable sequence genator tranformation in mapplets?

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Asked by: shahjahan

Latest Answer: If we use same sequence generator for multiple times to load the data at same time there will ... Last Updated By Sree.nivas on October 01, 2007


99. 1)how can we delete the cache files while we using aggregator transformaation?2)exlain about cache 1)how can we delete the cache files while we using aggregator transformaation?2)exlain about cache files handling in informatica3) there are two flat files and the two flat files contain two fileds as states.both the flat files contain duplicates how to eliminate this duplicates?4) can we use lookup transformation with out using source qualifier transformation?

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Asked by: anil


100. When do you use Normal Loading and the Bulk Loading, Tell the difference? Subscribe

Asked by: Thejaswini

Latest Answer: Normal Load: It loads the records one by one, Server writes log file for each record, So it takes mo... Last Updated By chandrarekha on September 28, 2007


101. How do you define fact less Fact Table in Informatica Subscribe

Asked by: Thejaswini

Latest Answer: Fact table without measure is called factless fact tablefact less fact tables are used to

































capture da... Last Updated By chandrarekha on September 28, 2007

102. What is Repository size, What is its min and max size? Subscribe

Asked by: venki

Latest Answer: 10GB... Last Updated By chandrarekha on September 28, 2007


103. would you recommend using an orderby clause as part of a lookup sql override for a cached lookup dawould you recommend using an orderby clause as part of a lookup sql override for a cached lookup data set in informatica

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Asked by: suraj


104. Have you implmented Lookup in your mapping, If yes give some example? Subscribe

Asked by: jaya

Latest Answer: we do. we have to update or insert a row in the target depending upon the data from the sources. so ... Last Updated By vemurisasidhar on September 26, 2007


105. What is aggregate cache in aggregator transforamtion? Subscribe

The aggregator stores data in the aggregate cache until it completes aggregate calculations.When u run a session that uses an aggregator transformation,the informatica server creates index and data ca Latest Answer: whenÂ server runs the session with aggregate transformation ,it stores data in memory until it comp... Last Updated By chandrarekha on September 24, 2007


106. What does the first column of bad file (rejected rows) indicate? Explain Subscribe

Asked by: thejaswini

Latest Answer: First column of the bad file indicates row -indicator and second column indicates column indicatorRo... Last Updated By chandrarekha on September 24, 2007


107. how do you measure slowly changing dimensions using lookup table Subscribe

Asked by: hanumca07

Latest Answer: the lookup table is used to split the data by comparing the source and target data. the da... Last Updated By vemurisasidhar on September 24, 2007


108. What is the difference between source definition database and source qualifier? Subscribe

Asked by: latha

Latest Answer: a source definition database contain the datatypes that are used in the orginal database from which ... Last Updated By vemurisasidhar on September 24, 2007


109. What is the logic will you implement to load data into a fact table from n dimension tables?

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Asked by: veereshkethari

Latest Answer: we can do this by using mapping wizard. there are of basically two types:1)getting started wiz... Last Updated By vemurisasidhar on September 24, 2007


110. what is semi additve measuresand fully additive measures Subscribe



































Asked by: elektra

Latest Answer: A measurable data on which simple addition can be performed is called fully additive such measurabl... Last Updated By ramakrishna on September 22, 2007


111. how do you add and delete header , footer records from flat file during load to oracle?

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Asked by: aravind

Latest Answer: We can add header and footer record in two ways.1) Within the informatica session we can sequen... Last Updated By Abhishek on September 22, 2007


112. What is the maplet? Subscribe

Maplet is a set of transformations that you build in the maplet designer and U can use in multiple mapings. Latest Answer: A maplet is a reusable object, which contains one or more than one transformation, which is used to ... Last Updated By anand on September 17, 2007


113. What r two types of processes that informatica runs the session? Subscribe

Load manager Process: Starts the session, creates the DTM process, and sends post-session email when the session completes. The DTM process. Creates threads to initialize the session, read, write, and Latest Answer: When the workflow start to run,Then the informatica server process startsTwo process:load manager pr... Last Updated By rasmi on September 17, 2007


114. Hi Allwhat is the logic will you implement to laod the data in to one factv from 'n' numbHi Allwhat is the logic will you implement to laod the data in to one factv from 'n' number of dimension tables.

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Asked by: Hareesh


115. what is update strategy transformation ? Subscribe

This transformation is used to maintain the history data or just most recent changes in to target table. Latest Answer: Update strategy transformation is used for flagging the records for insert, update, delete and rej... Last Updated By chandrarekha on September 13, 2007


116. What r the connected or unconnected transforamations? Subscribe

An unconnected transforamtion is not connected to other transformations in the mapping.Connected transforamation is connected to other transforamtions in the mapping. Latest Answer: Connect Transformation :A transformation which participates in the mapping data flow Connected t... Last Updated By chandrarekha on September 12, 2007


117. What r the mapping paramaters and maping variables? Subscribe

Maping parameter represents a constant value that U can define before running a session.A mapping parameter retains the same value throughout the entire session. When


























u use the maping parameter ,U dec Latest Answer: Mapping parameter represents a constant value defined before mapping run. Mapping reusability can b... Last Updated By chandrarekha on September 12, 2007


118. Does Informatica provide a SAS exit in any of its products? Subscribe

What I am trying to determine is if I could invoke a SAS session from within Informatica's ETL product(s) in order to execute a complicated transformation written in SAS which would then return the re Asked by: RJones


119. Which SDLC suits best for the datawarehousing project. Subscribe

Asked by: arun

Latest Answer: Datawarehousing projects are different from the traditional OLTP project. First of all they are ongo... Last Updated By anjanroy on September 12, 2007


120. in Dimensional modeling fact table is normalized or denormalized?in case of star schema and incase in Dimensional modeling fact table is normalized or denormalized?in case of star schema and incase of snow flake schema?

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Asked by: Sreenivas


121. What is granularity in INFORMATICA? How should be the level of granularity for a fact table as wellWhat is granularity in INFORMATICA? How should be the level of granularity for a fact table as well as for a dimension table?

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Asked by: Yogendra pradeep


122. What r the active and passive transforamtions? Subscribe

An active transforamtion can change the number of rows that pass through it.A passive transformation does not change the number of rows that pass through it. Latest Answer: Active TransformationÂ : A Transformation which change the number of rows when data is flowing from ... Last Updated By chandrarekha on September 07, 2007


123. What r the designer tools for creating tranformations? Subscribe

Mapping designer Tansformation developer Mapplet designer Latest Answer: Mapping DesignerMaplet DesignerTransformation DeveoperÂ - for reusable transformation... Last Updated By chandrarekha on September 07, 2007


124. What is Session and Batches? Subscribe

Session - A Session Is A set of instructions that tells the Informatica Server How And When To Move Data From Sources To Targets. After creating the session, we can use either the server manager or th Latest Answer: Session is a set of instructions that relates to extraction, transformation and loading. Session is ... Last Updated By chandrarekha on September 06, 2007


125. What is Data Transformation Manager? Subscribe

After the load manager performs validations for the session, it creates the DTM process.





























The DTM process is the second process associated with the session run. The primary purpose of the DTM process i Latest Answer: Load manager and DTM are the components of Informatica server. Load manager manages the load o... Last Updated By chandrarekha on September 06, 2007


126. Why we use lookup transformations? Subscribe

Lookup Transformations can access data from relational tables that are not sources in mapping. With Lookup transformation, we can accomplish the following tasks:Get a related value-Get the Employee N Latest Answer: Look up tranformations are used toGet a related valueUpdating slowly changing dimensionCaluculating ... Last Updated By chandrarekha on September 06, 2007


127. Source Qualifier in Informatica Subscribe

What is the Technical reason for having Source Qualifier in Informatica? Can a mapping be implemented without it? (Please don't mention the functionality of SQ) but the main reason why a mapping can't Asked by: Varun

Latest Answer: In informatica source qualifier acts as a staging area, and itÂ will createÂ its ownÂ data types whi... Last Updated By chandra Bose on September 04, 2007


128. where does the records goes which does not satisfy condition in filter transformation?

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Asked by: bajrang

Latest Answer: There is no default group in Filter Transformation. The records which does not satisfy filter condit... Last Updated By Sujaya on September 03, 2007


129. How can U create or import flat file definition in to the warehouse designer? Subscribe

U can not create or import flat file defintion in to warehouse designer directly.Instead U must analyze the file in source analyzer,then drag it into the warehouse designer.When U drag the flat file s Latest Answer: While creating flatfiles manually, we drag and drop the structure from SQ if the structure we need i... Last Updated By Latha. on September 03, 2007


130. How do you identify existing rows of data in the target table using lookup transformation?

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Can identify existing rows of data using unconnected lookup transformation. Latest Answer: There are two ways to lookup the target table to verify a row exists or not :1. Use connect dynamic ... Last Updated By SK on August 30, 2007


131. can any one tell why we are populating time dimension only with scripts not with mapping?

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Asked by: karthika

Latest Answer: How can time dimension be a rapidly chnging dimensions. Time dimension is one table where you load d... Last Updated By mahesh on August 27, 2007


132. What are the challenges you have faced in your Project (DWH-ETL)? Explain with example?

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Please give suggession. This question was asked by employer recently. Thanks in advance. Asked by: Pvnvarma


133. What r the different options used to configure the sequential batches? Subscribe

Two options Run the session only if previous session completes sucessfully. Always runs the session. Latest Answer: You have to specify those options in the workflow designer. You can double click the pipeline ... Last Updated By sn3508 on August 24, 2007


134. What is meant by named cache?At what situation we can use it? Subscribe

Asked by: prakash B S

Latest Answer: By default there will be no name for the cache in lookup transformation. Everytime you ru... Last Updated By sn3508 on August 24, 2007


135. What r the types of lookup caches? Subscribe

Persistent cache: U can save the lookup cache files and reuse them the next time the informatica server processes a lookup transformation configured to use the cache. Recache from database: If the per Latest Answer: There are five types of caches such as static cache,dynamic cache,persistant cache,shared cache, etc... Last Updated By kathir on August 23, 2007


136. How can U improve session performance in aggregator transformation? Subscribe

Use sorted input. Latest Answer: By using Incrimental aggrigation also we can improve performence.Becaue it passes the new data to th... Last Updated By kiran on August 12, 2007


137. what is the hierarchies in DWH Subscribe

Asked by: smita

Latest Answer: Hierarchy in DWH is nothing but an ordered series of related dimensions grouped together to perform ... Last Updated By pruthvi on August 09, 2007


138. What will be the way to send only duplicate records to the Target? Subscribe

Asked by: N SRIRAM

Latest Answer: If you take a ex:EMP TABLEÂ having the duplicate recordsThe query isSELECT *FROM EMP WHERE EMPNO IN... Last Updated By sanjeev on August 07, 2007


139. What is difference between maplet and reusable transformation? Subscribe

Maplet consists of set of transformations that is reusable.A reusable transformation is a single transformation that can be reusable. If u create a variables or parameters in maplet that can not be us Latest Answer: Mapplet is a group of reusable transformation.The main purpose of using Mapplet is to hide the... Last Updated By siraj khan on August 06, 2007


140. In Source Qualifier and in Target I have 1,2,3 row and I want to insert 4,5 records in source a

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In Source Qualifier and in Target I have 1,2,3 row and I want to insert 4,5 records in source and I want them in target also? What is the procedure to load them?

Asked by: sravanmca2k5


141. What is Router transformation? Subscribe

Router transformation allows you to use a condition to test data. It is similar to filter transformation. It allows the testing to be done on one or more conditions. Latest Answer: Router Transformation is same as that of Filter Transformation.The only difference is that we can sp... Last Updated By siraj.khan on August 03, 2007


142. What are Aggregate transformation? Subscribe

Aggregator transformation allows you to perform aggregate calculations, such as averages and sums. Latest Answer: Aggregate Transformation is used to aggregate the data Colum wise..The only difference between the A... Last Updated By siraj.khan on August 03, 2007


143. can we lookup a table from a source qualifer transformation-unconnected lookup Subscribe

Asked by: asha

Latest Answer: No it's not possible. source qualifier don't have any variables fields to utilize as expression.... Last Updated By siraj.khan on August 03, 2007


144. What is redo log file in Informatica ?. Subscribe

Asked by: Manoj


145. How to run a workflow without using GUI i.e, Worlflow Manager, Workflow Monitor and pmcmd?

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Asked by: Suma

Latest Answer: pmcmd is not GUI. It is a command you can use within unix script to run the workflow.... Last Updated By balaetl on August 03, 2007


146. What are the Commit & Commit Intervals? Subscribe

Asked by: bashudha

Latest Answer: Commit interval is a interval in which the Informatica server loads the data into the target.... Last Updated By rasmi on July 26, 2007


147. We are using Update Strategy Transformation in mapping how can we know whether insert or update or We are using Update Strategy Transformation in mapping how can we know whether insert or update or reject or delete option has been selected during running of sessions in Informatica.

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Asked by: renukhareddy


148. what is the output for different groups in case of router transformation ifi. 1--Aii.2--Biii.3--A owhat is the output for different groups in case of router transformation ifi. 1--Aii.2--Biii.3--A or Biv. 4--A and Bv.5--Default

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Asked by: sathish208


149. why dimenstion tables are denormalized in nature ? Subscribe




































Asked by: gazulas

Latest Answer: De-normalization is basically the concept of keeping all the dimension hierarchies in a single dimen... Last Updated By Adil M on July 04, 2007


150. In the source, if we also have duplicate records and we have 2 targets, T1- for unique values and TIn the source, if we also have duplicate records and we have 2 targets, T1- for unique values and T2- only for duplicate values. How do we pass the unique values to T1 and duplicate values to T2 from the source to these 2 different targets in a single mapping?

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Asked by: Aarthi


151. hi all, recently i was asked by the interviewer like,in the concept of mapping parameters and variahi all, recently i was asked by the interviewer like,in the concept of mapping parameters and variables, the variable value will be saved to the repository after the completion of the session and the next time when u run the session, the server takes the saved variable value in the repository and starts assigning the next value of the saved value. for example i ran a session and in the end it stored a value of 50 to the repository.next time when i run the session, it should start with the value

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Asked by: vssaks


152. Where and Why do we use Joiner Cache? Subscribe

Asked by: mohammed haneef

Latest Answer: Hi,Joiner Cache will use in Joiner t/r to improve the performance. While using joiner cache in... Last Updated By mohammed haneef on June 28, 2007


153. What is the Router transformation? Subscribe

A Router transformation is similar to a Filter transformation because both transformations allow you to use a condition to test data. However, a Filter transformation tests data for one condition and Latest Answer: Note:- i think the definition and purpose of Router transformation define by sithusithu, sithu is no... Last Updated By Rksinghpathania on June 27, 2007


154. What is difference between IIF and DECODE function Subscribe

Asked by: Srinu

Latest Answer: Decode can be used in select statement whereas IIF cannot be used.... Last Updated By Vaishali on June 25, 2007


155. To provide support for Mainframes source data,which files r used as a source definitions?

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COBOL files Latest Answer: The mainframe files are Used as VSAM files in Informatica by using the Normaliser transformation ... Last Updated By Prabu on June 22, 2007


156. What is the difference between Enterprise data warehouse and a data warehouse ??Which all transformWhat is the difference between Enterprise data warehouse and a data warehouse ??Which all transformation uses the cache directory ?

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157. What are the Data Cleansing Tools used in the DWH?What are the Data Profiling Tools used for DWh?

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Asked by: venkatarajesh

Latest Answer: Data Cleansing Tool: TriliumProfile tool: Informatica Profiler... Last Updated By Shashikumar on June 21, 2007


158. What is the best way to modify a mapping if the target table name is changed? Subscribe

Asked by: vsarita80

Latest Answer: There is no as such best way, but you have to incorporate following steps -1. Change the name in Map... Last Updated By yuva010 on June 20, 2007


159. What is a Materialized view? Diff. Between Materialized view and view Subscribe


Latest Answer: Materialized view stores the result set ofÂ a query, but normal view does not store the same. We ca... Last Updated By Pradeep Behera on June 20, 2007


160. How many ways u create ports? Subscribe

Two ways 1.Drag the port from another transforamtion 2.Click the add buttion on the ports tab. Latest Answer: we can copy and paste the ports in the ports tab ... Last Updated By Nitin Rane on June 13, 2007


161. Source table has 1000 rows. In session configuration --- target Load option-- \ Subscribe


Latest Answer: If ur database supported bulk option, Then choose the bulk option. other wise go for normal option... Last Updated By siva251 on June 12, 2007


162. what transformation you can use inplace of lookup? Subscribe

Asked by: manoj

Latest Answer: You can join that table which you wanted to use in lookup in the source qualifier using SQL override... Last Updated By Prasad P on June 11, 2007


163. what is incremental loading in informatica(that is used to load only updated information in the souwhat is incremental loading in informatica(that is used to load only updated information in the source)?how and where u use it in informatica?

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Asked by: amark123


164. how many types of dimensions are available in informatica? Subscribe

Asked by: Deeprekha

Latest Answer: Hai, Gopinath. &n... Last Updated By pkishoreroy on May 29, 2007


165. How can we access MAINFRAME tables in INFORMATICA as a source ? Subscribe

ex-: Suppose a table EMP is in MAINFRAME then how can we access this table as SOURCE TABLE in informatica? Asked by: Md Iqbal Hassan

Latest Answer: Use the Normalizer transformation to take the Mainframe sources(COBOL)... Last Updated By latha on May 29, 2007






































166. How can u stop a batch? Subscribe

By using server manager or pmcmd. Latest Answer: by using menu command or pmcmd.... Last Updated By VEMBURAJ.P on May 28, 2007


167. what is the main difference bw using an object from shared folder and copying an object and using what is the main difference bw using an object from shared folder and copying an object and using that copied object ?

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Asked by: shaju


168. how do you fine tune the mapping and what methods we follow for different types of transformations?

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169. in realtime which one is better star schema or snowflake star schemathe surrogate will be linked toin realtime which one is better star schema or snowflake star schemathe surrogate will be linked to which columns in the dimension table.thanks in advance

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170. Can u use the maping parameters or variables created in one maping into any other reusable transforCan u use the maping parameters or variables created in one maping into any other reusable transformation?

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Yes.Because reusable tranformation is not contained with any maplet or maping. (Answers: 2) Read / Answer

171. Can we update target table without using update strategy transformation? why? Subscribe

Asked by: phanimv

Latest Answer: Yes, we can update the target table by using the session properties.There are some options in the Se... Last Updated By rahul on May 22, 2007


172. What is the difference between SQL override in Source Qualifier and SQL override in Look up transfoWhat is the difference between SQL override in Source Qualifier and SQL override in Look up transformation.

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173. What is the difference between power connect and power centre? What is the use of power connect.

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Asked by: g.nagaprasad


174. what is the new lookup port in look-up transformation? Subscribe

Asked by: phanimv

Latest Answer: The new port in lookup transformation is Associative portCheers,Bobby... Last Updated By Bobby on May 17, 2007


175. What is source based commit and target based commit with an example ? What is the background procesWhat is source based commit and target based commit with an example ? What is the background process that wil be done if you select source based commit or target based commit ?

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176. What does Check-In and Check-Out option refer to in the mapping designer? Subscribe

Asked by: sanghala

Latest Answer: Check-In and Check-Out refers to Versioning your Mapping. It is like maintaining the changes you hav... Last Updated By ramgan_tryst on May 15, 2007


177. can any body write a session parameter file which will change the source and targets for every sesscan any body write a session parameter file which will change the source and targets for every session. i.e different source and targets for each session run. thx in advance

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178. what is homogeneous transformation? Subscribe

Asked by: venkat

Latest Answer: Pulling the data from same type of sources using a same database link is called Homogenous. The key ... Last Updated By vinod madala on May 11, 2007


179. For homogeneous sources we use Source Qualifier to join the sources? Why not the joiner transforFor homogeneous sources we use Source Qualifier to join the sources? Why not the joiner transformation.

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Asked by: sravan


180. If a Mapping is running slow, What steps you will take, to correct it? Subscribe

Asked by: boisee

Latest Answer: provide optimizer hints to the informatica. such as force informatica to use indexes, synonyms, etc ... Last Updated By vinodh259 on May 11, 2007


181. How to delete duplicate rows in flat files source is any option in informatica Subscribe

Asked by: sravan

Latest Answer: You cannot write SQL override for flat file... Last Updated By Prasad on May 10, 2007


182. How to create slowly changing dimension in informatica? Subscribe

Asked by: brahmaiah

Latest Answer: We can create them manually or use the slowly changing dimension wizard to avoid the hassels.Use slo... Last Updated By hanug on May 07, 2007


183. How do you recover a session or folder if you accidentally dropped them? Subscribe

Asked by: vsarita80

Latest Answer: u can find ur backup and restore from the backup. If u dont have backup,u lost everything. u cant ge... Last Updated By hanug on May 07, 2007


184. How can you call trigger in stored procedure transformation Subscribe

Asked by: srilu.srilatha

Latest Answer: Hi:Trigger can not be called from Stored procedure. Trigger will execute implicitly when u are perfo... Last Updated By hanug on May 07, 2007


185. How do you automatically execute a batch or session? Subscribe











































Asked by: vsarita80

Latest Answer: u can use the scripting(either UNIX shell or Windows Dos scripting) and then schedule the script.Han... Last Updated By hanug on May 07, 2007


186. If a session fails after loading of 10,000 records in to the target.How can u load the records fromIf a session fails after loading of 10,000 records in to the target.How can u load the records from 10001 th record when u run the session next time in informatica 6.1?

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Asked by: ravi.redy


187. What is the difference between Power Centre and Power Mart?What is the procedure for creating IndepWhat is the difference between Power Centre and Power Mart?What is the procedure for creating Independent Data Marts from Informatica 7.1?

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Asked by: SVS RAJESH


188. What are the general reasons of session failure with Look Up having Dynamic Cache?

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Asked by: yuva010

Latest Answer: hi,If u r using dynamic lookup and if it is trying to return more than one value then session fails... Last Updated By shanthi1 on April 24, 2007


189. How do we estimate the depth of the session scheduling queue? Where do we set the number of maximumHow do we estimate the depth of the session scheduling queue? Where do we set the number of maximum concurrent sessions that Informatica can run at a given time?

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Asked by: phanimv


190. What r the joiner caches? Subscribe

When a Joiner transformation occurs in a session, the Informatica Server reads all the records from the master source and builds index and data caches based on the master rows. After building the cach Latest Answer: For version 7.x and above :When the PowerCenter Server processes a Joiner transformation, it reads r... Last Updated By bneha15 on April 23, 2007


191. Where should U place the flat file to import the flat file defintion to the designer? Subscribe

Place it in local folder Latest Answer: file must be in a directory local to the client machine.... Last Updated By bneha15 on April 20, 2007


192. Why we use stored procedure transformation? Subscribe

For populating and maintaining data bases. Latest Answer: we use a stored procedure transformation to execute a stored procedure which in turn might do the ab... Last Updated By bneha15 on April 18, 2007


193. What is tracing level and what r the types of tracing level? Subscribe

Tracing level represents the amount of information that informatcia server writes in a log file. Types of tracing level Normal Verbose Verbose init Verbose data





































Latest Answer: Its 1) Terse &nb... Last Updated By Minnu on April 16, 2007


194. What are Target Types on the Server? Subscribe

Target Types are File, Relational and ERP. Latest Answer: PowerCenter can load data into the following targets: Relational. Oracle, Sybase, Sybase IQ, Informi... Last Updated By manojkumar_dwh on April 14, 2007


195. What r the types of maping wizards that r to be provided in Informatica? Subscribe

The Designer provides two mapping wizards to help you create mappings quickly and easily. Both wizards are designed to create mappings for loading and maintaining star schemas, a series of dimensions Latest Answer: Inf designer :Mapping -> wizards --> 1) Getting started -->Simple pass through ... Last Updated By raj on April 13, 2007


196. What r the reusable transforamtions? Subscribe

Reusable transformations can be used in multiple mappings.When u need to incorporate this transformation into maping,U add an instance of it to maping.Later if U change the definition of the transform Latest Answer: 1. A reusable transformation can be used in multiple transformations2.The designer stores each reusa... Last Updated By devaranr on April 12, 2007


197. what is the gap analysis? Subscribe

Asked by: satyambabu

Latest Answer: For a project, there will be: 1.BRD(Business Requirement Document)-BA 2.SSSD(Source System Study Do... Last Updated By vizaik on April 11, 2007


198. If a session fails after loading of 10,000 records in to the target.How can u load the records fromIf a session fails after loading of 10,000 records in to the target.How can u load the records from 10001 th record when u run the session next time?

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As explained above informatcia server has 3 methods to recovering the sessions.Use performing recovery to load the records from where the session fails.


199. what is the mapping for unit testing in Informatica, are there any other testings in Informatica, what is the mapping for unit testing in Informatica, are there any other testings in Informatica, and how we will do them as a etl developer. how do the testing people will do testing are there any specific tools for testing

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Asked by: phanimv


200. What r the types of lookup? Subscribe

Connected and unconnected Latest Answer: hello boss/madamonly two types of lookup are there they are:1) Connected lookup2) Unconnected lookup... Last Updated By zaki on April 01, 2007


201. what is the difference between mapplet and reusable Transformation? Subscribe

Asked by: Raghu































Latest Answer: A set of reusable transformations is called mapplet where as a single reusable transformtion is call... Last Updated By veera_kk on March 30, 2007


202. How to parse characters using functions in the expression transformation. For example if a column hHow to parse characters using functions in the expression transformation. For example if a column has character like mgr=a. I have to parse the character 'mgr='. Which function should I use?

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Asked by: karthumyl


203. Strategy Transformation Subscribe

By using Update Strategy Transformation we use to maintain historical data using Type2 & Type3. By both of this which is better to use? Why? Asked by: phanimv

Latest Answer: using type 2 u can maintain total historical data along with current data;using type 3 u can m... Last Updated By sai on March 26, 2007


204. how do you test mapping and what is associate port? Subscribe


Latest Answer: hiU can test mapping in mapping Designer by using debugger. In Debugger u can test first instance an... Last Updated By sreedhark26 on March 26, 2007


205. Why can't we use normalizer transformation in mapplet? Subscribe

Asked by: phanimv

Latest Answer: HiNt is using for cobol sources, u can take data in source analyzer automatically displays normalize... Last Updated By sreedhark26 on March 26, 2007


206. what is associated port in look up. Subscribe


Latest Answer: whenever you are using scd2, you have to use dynamic cache, then one port must be specified for upda... Last Updated By vizaik on March 25, 2007


207. What is use of event waiter? Subscribe

Asked by: raju

Latest Answer: Event wait: will hold the workflow until it is get other instruction or delay mentioned by the userC... Last Updated By sithu on March 24, 2007


208. which transformation can perform the non equi join? Subscribe

Asked by: hanu_ch79

Latest Answer: It is LookupCheers,[email protected]... Last Updated By sithu on March 24, 2007


209. Which objects cannot be used in a mapplet transformation Subscribe

Asked by: sivaramkumar

Latest Answer: We can not use the following objects/ transformations in the mappletSequence GeneratorStored Procedu... Last Updated By sithu on March 24, 2007


210. What is re-dimension? Subscribe

Asked by: Raja











































211. What is inline view? Subscribe

Asked by: prasadw

Latest Answer: used in oracle to simplify queriesex: select rowid from (select ename from emp group by sal) where r... Last Updated By vizaik on March 24, 2007


212. What is the exact difference between joiner and lookup transformation Subscribe

Asked by: honey

Latest Answer: lookup may not participate in mappinglookup does only non equi joinjoiner table must paraticipate in... Last Updated By vizaik on March 24, 2007


213. How do you handle two sessions in Informatica Subscribe

can any one tell me the option between the two session . if previous session execute successfully than run the next session... Asked by: ravi214u

Latest Answer: you can drag and drop more than one session in a workflow.there will be linking different and issequ... Last Updated By vizaik on March 24, 2007


214. Explain about Informatica server process that how it works relates to mapping variables?

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Asked by: jvenkateshkumar

Latest Answer: First load manager starts the session and it performs verifications and validations about variables ... Last Updated By vizaik on March 24, 2007


215. What are the steps involved in to get source from OLTP system to staging area Subscribe

Asked by: ks_vasu

Latest Answer: go to source analyzerimport databasesgo to warehouse designerimport databases (target definitions) e... Last Updated By vizaik on March 24, 2007


216. Why use the lookup transformation ? Subscribe

To perform the following tasks. Get a related value. For example, if your source table includes employee ID, but you want to include the employee name in your target table to make your summary data ea Latest Answer: For maintaining the slowly changing diamensions... Last Updated By binoop on March 22, 2007


217. How can you migrate Mappings and Sessions from informatica 6.2 to informatica 7.1?

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Asked by: Aswat

Latest Answer: Hi, It's simple, Just go and change source name and targert name in Session p... Last Updated By Ravi kumar Guturi on March 22, 2007


218. what are steps invovlved in connecting OLTP system to DATAWARE HOUSE to get the souce from OLTP syswhat are steps invovlved in connecting OLTP system to DATAWARE HOUSE to get the souce from OLTP system

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Asked by: srinivas


219. How many mappings you have done in your project(in a banking)? Subscribe






































Asked by: bibhu

Latest Answer: Exactly 93.133... Last Updated By Whatever on March 19, 2007


220. How do we delete staging area in our project? Subscribe

Asked by: anil

Latest Answer: If we use Type 2 of slowly changing dimensions we can delete staging area. because SCD Type 2 stores... Last Updated By Aparna on March 15, 2007


221. How to do aggregation with out using AGGREGAROR Transformation ? Subscribe

Asked by: sankar

Latest Answer: Overwrite the SQL Query at Source Qualifier transformation... Last Updated By shravanamsharat on March 15, 2007


222. how do we remove the staging area Subscribe


Latest Answer: Hi,1)At DB level we can simply DROP the stagin table.2)then Create Target table at DB level.3) Direc... Last Updated By vikki_gupta2003 on March 14, 2007


223. What are the types of loading in Informatica? Subscribe

Asked by: sivaprakasam

Latest Answer: Two Types Normal :Data retrival is very easy it creates a index Bulk &nbs... Last Updated By veerachalla on March 13, 2007


224. how can we eliminate source bottleneck using query hint Subscribe

Asked by: Nagendra

Latest Answer: You can identify source bottlenecks by executing the read query directly against the source database... Last Updated By sreedhark26 on March 12, 2007


225. when informatica 7.1.1 version was introduced into market Subscribe

Asked by: venkatm

Latest Answer: 2004... Last Updated By sreedhark26 on March 12, 2007


226. How do you change change column to row in Informatica Subscribe

Asked by: ravi214u

Latest Answer: First u can ask what type of data change columns to rows in informatica?Next we can use expression a... Last Updated By sreedhark26 on March 12, 2007


227. How do we lookup data in the target and the source to compare them without using lookup transformaHow do we lookup data in the target and the source to compare them without using lookup transformation? basically i mean getting lookup functionality without using lookup transformation?thank you

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228. How a LOOKUP is passive? Subscribe

Asked by: kiran

Latest Answer: Lookup is using for geta a related value and perform calculation. lookup is using for







































search value f... Last Updated By sreedhark26 on March 05, 2007

229. Hello,I was asked this question in an interview,Where did you implement SCD2 and what was the tranHello,I was asked this question in an interview,Where did you implement SCD2 and what was the transformations used.What was the complex transformations did you use.Answers please........

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230. Hi ,About Informatica Power center 7:1) I want to Know which mapping properties can be overridden oHi ,About Informatica Power center 7:1) I want to Know which mapping properties can be overridden on a Session Task level.2)Know what types of permissions are needed to run and schedule Work flows.Someone can help me?Thank you.

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231. what s an ODS? what s the purpose of ODS?s that a logical database that stores extracted data from what s an ODS? what s the purpose of ODS?s that a logical database that stores extracted data from source ?

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232. Is it possible to execute work flows in different repositories at the same time using the same infoIs it possible to execute work flows in different repositories at the same time using the same informatica server?

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233. Explain about scheduling real time in informatica Subscribe

Asked by: prakash

Latest Answer: Scheduling of Informatica jobs can be done by the following ways:Informatica Workflow MangerUsing Cr... Last Updated By sanghala on March 01, 2007


234. What are the Differences between Informatica Power Center versions 6.2 and 7.1, also between VersioWhat are the Differences between Informatica Power Center versions 6.2 and 7.1, also between Versions 6.2 and 5.1?

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Asked by: Sunny


235. hii. this question was asked in accenture interviewIf ur having source table in which there are rechii. this question was asked in accenture interviewIf ur having source table in which there are records of 10 different countries and ur havig 10 target tables so tell me how should we load the individual data of country in individual table.i know that we can do this using router transformation but i m not able to make it so plz can anyone help me in this.regardsTarang Jain

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236. How Can we join one relational table and one flat file without having common key using joiner transHow Can we join one relational table and one flat file without having common key using joiner transoformation? Is it possible to join without common key to join using joiner transformation?

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237. how can we remove/optmize source bottlenecks using "query hints" Subscribe

Asked by: me_nagu

Latest Answer: first, u must have proper indexes and the table must be analyzed to gather stats to use the cbo. &nb... Last Updated By toffycoffy on February 27, 2007


238. what is the advantages of converting stored procedures into Informatica mappings?

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Asked by: kiran

Latest Answer: a stored procedure call is made thru an ODBC connection over a network (sometimes the info server re... Last Updated By toffycoffy on February 27, 2007


239. hi, how we validate all the mappings in the repository at once Subscribe

Asked by: surendrapoluparti

Latest Answer: Yes. We can validate all mappings using the Repo Manager.... Last Updated By Divya on February 23, 2007


240. How to use incremental aggregation in real time? Subscribe

Asked by: renu

Latest Answer: The first time you run a session with incremental aggregation enabled, the server process the entire... Last Updated By Hanu Ch Rao on February 22, 2007


241. How many staging areas are there in your project? Recently I have asked this question is there numbHow many staging areas are there in your project? Recently I have asked this question is there number of staging areas? Please briefly explain it , Thanks in advance.

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242. What are Target Options on the Servers? Subscribe

Target Options for File Target type are FTP File, Loader and MQ.There are no target options for ERP target typeTarget Options for Relational are Insert, Update (as Update), Update (as Insert), Update Latest Answer: Target option for Flat file,relational file (update ,Insert). ... Last Updated By MANOJ KUMARPANIGRAHI on February 21, 2007


243. what is sql override where do we use and which transformations Subscribe

Asked by: sravan

Latest Answer: we use sql override for 3 transformationswhen the source is homo genious1. joiner transformation2. f... Last Updated By vishal on February 16, 2007


244. How do you import 500file from tally software in informatica. ? Subscribe

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245. Which transformation has the most complexity Lookup or Joiner? Subscribe


Latest Answer: lookupbut it will reduse the complexity of the solutions and improves the performance of the wo... Last Updated By sai on February 14, 2007


246. What's the difference between source and target object definitions in Informatica? Subscribe





































Asked by: Maria

Latest Answer: Hai ,what Saibabu wrote is correct.Source definition means defining the structure of the source from... Last Updated By ggk.krishna on February 13, 2007


247. What are variable ports and list two situations when they can be used? Subscribe

Asked by: swati

Latest Answer: Variable Ports usually carry intermediate data (values) and can be used in Expression transformation... Last Updated By mahesh4346 on February 05, 2007


248. How to FTP a file to a remote server? Subscribe

Asked by: geetham

Latest Answer: Hi U can transfer file from one server to other..............In unix there is an utililty XCOM... Last Updated By lingesh kumar on January 31, 2007


249. how do u check the source for the latest records that are to be loaded into the target.i.e i have lhow do u check the source for the latest records that are to be loaded into the target.i.e i have loaded some records yesterday, today again the file has been populated with some more records today, so how do i find the records populated today.

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250. What is the purpose of using UNIX commands in informatica. Which UNIX commands are generally used wWhat is the purpose of using UNIX commands in informatica. Which UNIX commands are generally used with informatica.

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251. what is the difff between static cache and dynamic cache in which scenario do we use them .give thewhat is the difff between static cache and dynamic cache in which scenario do we use them .give the example

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252. Kindly suggest how to install and configure Informatica in Unix. I have installed informatica in WiKindly suggest how to install and configure Informatica in Unix. I have installed informatica in Windows 2000 can I use the same CDs to install in unix ..

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253. which one is better performance wise joiner or lookup Subscribe

Asked by: swetha

Latest Answer: Are you lookuping flat file or database table? Generaly, sorted joiner is more effective on flat fil... Last Updated By anu on January 25, 2007


254. What is meant by source is changing incrementally? explain with example Subscribe

Asked by: prasad

Latest Answer: I have a good example to explain this . Think about HR Data for a very big Company. The data keep on... Last Updated By Srinivas Kumar on January 22, 2007


255. how can we delete duplicate rows from flat files ? Subscribe





































Asked by: phanimv

Latest Answer: Use Sorter Transformation and check "Distinct" option. It will remove the duplicates.... Last Updated By Srinivas Kumar Paga on January 22, 2007


256. How to load the time dimension using Informatica ? Subscribe

Asked by:

Latest Answer: Hi Kiran,Can U plz tell me in detail how do we do that?I am a fresher in informatica...plz hel... Last Updated By monicageller on January 19, 2007


257. Hi ,Recently in an interview they aske me what can we do in mapplets,that we cannot do in mappingsHi ,Recently in an interview they aske me what can we do in mapplets,that we cannot do in mappings? can one please answer me.Thanks for your time

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Asked by: reddy


258. 1. While executing an FTP command in a Shell script, we get following error : TM_6056 Error executi1. While executing an FTP command in a Shell script, we get following error : TM_6056 Error executing shell command [FILE_TRANSFER.sh]. Return code is [256].2. From experience we know that this is due to FTP failure. Resolution is to first resolve the FTP error & then re-start the workflow/server.3. I want to know what is the method of getting more details & resolution for such "Return Codes" (256 or any other) ?

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259. Explain the pipeline partition with real time example? Subscribe

Asked by: geetham

Latest Answer: PIPELINE SPECIFIES THE FLOW OF DATA FROM SOURCE TO TARGET .PIPELINE PARTISON MEANS PARTISON THE DAT... Last Updated By saibabu on January 11, 2007


260. where from we get the source data or how we access the source data Subscribe

Asked by: priyanka

Latest Answer: hisource data exists in OLTP systems of any form (flat file,relational database.,xml definition... Last Updated By saibabu on January 11, 2007


261. how many types of sessions are there in informatica.please explain them. Subscribe

Asked by: syed.zaheer basha

Latest Answer: HI Sreedhark26ur answer is wrong . dont minguide the members .what u wrote is , types of tasks used... Last Updated By saibabu on January 11, 2007


262. what is the diffrence between SCD and INCREMENTAL Aggregation? Subscribe

Asked by: sreedhar

Latest Answer: hi,scd means 'slowly changing dimentions'since dimention table maintains master data ,the column va... Last Updated By saibabu on January 11, 2007


263. What r the unsupported repository objects for a mapplet? Subscribe

COBOL source definition Joiner transformations Normalizer transformations Non reusable sequence generator transformations. Pre or post session stored procedures Target defintions Power mart 3.5 style



































Latest Answer: normaliser, xml source qualifier and cobol sources cannot be used... Last Updated By amar_smmath on January 10, 2007


264. What r the basic needs to join two sources in a source qualifier? Subscribe

Two sources should have primary and Foreign key relation ships. Two sources should have matching data types. Latest Answer: Both the sources must be from same database.... Last Updated By Yuvaraj on January 10, 2007


265. what is the event-based scheduling? Subscribe

Asked by: phanimv

Latest Answer: event based scheduling is using for row indicator file. when u dont no where is the source data that... Last Updated By sreedhark26 on January 09, 2007


266. You transfer 100000 rows to target but some records get discard. How wil you trace them? and where You transfer 100000 rows to target but some records get discard. How wil you trace them? and where its get loaded?

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267. when do u we use dynamic cache and when do we use static cache in an connected and unconnected lookwhen do u we use dynamic cache and when do we use static cache in an connected and unconnected lookup transformation

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Asked by: Kris


268. what is the look up transformation? Subscribe

Use lookup transformation in u’r mapping to lookup data in a relational table,view,synonym. Informatica server queries the look up table based on the lookup ports in the transformation.It compares the Latest Answer: Lookup transformation in a mapping is used to look up data in a flat file or a relational table, vie... Last Updated By Sridhar Tirukovela on January 02, 2007


269. You need to prepare common documentation of session+it's source and target.How do You make it You need to prepare common documentation of session+it's source and target.How do You make it with MVX views?

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270. How to load time dimension? Subscribe

Asked by: jagadish

Latest Answer: create a procedure to load data into Time Dimension. The procedure needs to run only once to populla... Last Updated By manisha.sinha on December 29, 2006


271. how do you load the time dimension. Subscribe


Latest Answer: create a procedure to load data into Time Dimension. The procedure needs to run only once to populla... Last Updated By manisha.sinha on





































December 29, 2006

272. What is the process of loading the time dimension? Subscribe

Asked by: sriman

Latest Answer: create a procedure to load data into Time Dimension. The procedure needs to run only once to populla... Last Updated By manisha.sinha on December 29, 2006


273. what is dynamic insert? Subscribe

Asked by: phanimv

Latest Answer: Hi srinu,Can u explain how to "associate sequence"?Thanks,Sri.... Last Updated By sri on December 27, 2006


274. 1.can u look up a flat file ? how ?2.what is test load? Subscribe

Asked by: phanimv

Latest Answer: Test load is the property we can set at the session property level by which Informatica performs all... Last Updated By Prasad on December 27, 2006


275. what is auxiliary mapping ? Subscribe

Asked by: phanimv

Latest Answer: Auxiliary Mapping is used to reflect change in one table when ever there is a change in the other ta... Last Updated By Kuldeep Kumar Verma on December 26, 2006


276. what is authenticator ? Subscribe

Asked by: phanimv

Latest Answer: Authentication requests validate user names and passwords to access the PowerCenter repository.You c... Last Updated By jvivek80 on December 25, 2006


277. what is Powermart and Power Center? Subscribe

Asked by: rekha v s

Latest Answer: Power Center supports Partitioning process, where as Power mart only does simple pass through.... Last Updated By Anupama on December 22, 2006


278. What is the optimum method to load five flat files with same structures into target? What is meantWhat is the optimum method to load five flat files with same structures into target? What is meant by file repository?

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279. how can we store previous session logs Subscribe

Asked by: jagadish

Latest Answer: Hi,Go to Session-->right click -->Select Edit Task then Goto -->Config Object then se... Last Updated By pavithra on December 17, 2006


280. How to load fact table ? Subscribe

Asked by: phanimv

Latest Answer: Fact tables always maintain the history records,and mostly consists of keys and measures,So after al... Last Updated By tannya on December 15, 2006





































281. What is exact use of 'Online' and 'Offline' server connect Options while definiWhat is exact use of 'Online' and 'Offline' server connect Options while defining Work flow in Work flow monitor? . The system hangs when 'Online' server connect option. The Informatica is installed on a Personal laptop.

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282. Differences between Informatica 6.2 and Informatica 7.0Yours sincerely,Rushi. Subscribe

Asked by: Rushidhar

Latest Answer: Can someone guide me on1) Data profiling.2) Exporting independent and dependent objects.Thanks in ad... Last Updated By Azhar on December 13, 2006


283. how to write a filter condition to get all the records of employees hired between any two given dathow to write a filter condition to get all the records of employees hired between any two given dates.

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284. HOw do u setup a schedule for data loading from scratch? Subscribe

Asked by: phanimv

Latest Answer: whether you are loading data from scratch(for the first time) or subsequent loads, there is no chang... Last Updated By hanug on December 12, 2006


285. I have an requirement where in the columns names in a table (Table A) should appear in rows of targI have an requirement where in the columns names in a table (Table A) should appear in rows of target table (Table B) i.e. converting columns to rows. Is it possible through Informatica? If so, how?

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286. What is ODS ?what data loaded from it ? What is DW architecture? Subscribe

Asked by: vino

Latest Answer: thq from ur answer i can come to one conclusion tht ODS is used to store the current data.i can assu... Last Updated By crishnathk on December 12, 2006


287. what is the diff b/w source qualifier transformation and application source qualifier transformatiowhat is the diff b/w source qualifier transformation and application source qualifier transformation?

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288. how to create primary key only on odd numbers? Subscribe

Asked by: phanimv

Latest Answer: Use sequence generator and set the 'Increment by' property in that with 2.... Last Updated By krishnasri424 on December 07, 2006


289. what is meant by lookup caches? Subscribe

The informatica server builds a cache in memory when it processes the first row af a data in a cached look up transformation.It allocates memory for the cache based on the amount u configure in the tr






































Latest Answer: A LookUP Cache is a Temporary Memory Area which is Created by the Informatica Server. which sto... Last Updated By Puli Ramesh on December 06, 2006


290. how can we populate the data into a time dimension ? Subscribe

Asked by: phanimv

Latest Answer: can u plz explain me about time dimension.... Last Updated By Bhargavi on December 06, 2006


291. Define maping and sessions? Subscribe

Maping: It is a set of source and target definitions linked by transformation objects that define the rules for transformation. Session : It is a set of instructions that describe how and when to move Latest Answer: Mapping:A set of source and target definitions linked by diffrent transformation that def... Last Updated By Pavani on December 04, 2006


292. Why and where we are using factless fact table? Subscribe

Asked by: manoj77ku

Latest Answer: Fact table will contains metrics and FK's corresponding to the Dimesional table, but factless Fact t... Last Updated By rma on December 01, 2006


293. tell me one complecated mapping Subscribe

Asked by: ram

Latest Answer: Mapping is nothing but flow of data from source to Target, we r giving instructions to power center ... Last Updated By rma on December 01, 2006


294. why exactly the dynamic lookup?plz can any bady can clarify it? Subscribe

Asked by: channu

Latest Answer: Dynamic lookup cache is used in case of connected lookups only, It is also called as read and write ... Last Updated By pallavi on November 30, 2006


295. Is a fact table normalized or de-normalized? Subscribe

Asked by: sree

Latest Answer: hiplease see the following site: http://72.14.253.104/search?q=cache:lkFjt6EmsxMJ:www.kimballgroup.c... Last Updated By lakshmi1 on November 29, 2006


296. how did you handle errors?(ETL-Row-Errors) Subscribe

Asked by: phanimv

Latest Answer: Hi friend,If there is an error comes it stored it on target_table.bad file.The error are in two type... Last Updated By phani on November 29, 2006


297. Informatica Live Interview Questions Subscribe

here are some of the interview questions i could not answer, any body can help giving answers for others also. thanks in advance.Explain grouped cross tab?Explain reference cursorWhat are parallel que Asked by: [email protected]

Latest Answer: The Default Index type for DWH is bitmap(non-unique)index... Last Updated By Pavan Amaraneni on November 24, 2006


298. what are the UTP'S Subscribe



































Asked by: vasu

Latest Answer: After creating the mapping each mapping can be tested by the developer individualy ... Last Updated By srinuv_11 on November 24, 2006


299. how to get 25 of 100 fields table is there any transformation available in informatica i know routehow to get 25 of 100 fields table is there any transformation available in informatica i know router/filter or any other?

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Asked by: vinay


300. what is aggregate awareness? Subscribe

Asked by: sharat

Latest Answer: It is the ability to dynamically re-write SQL to the level of granularity neededto answer a bu... Last Updated By satya on November 16, 2006


301. E-R modelling is used for OLTP systemsDimesional modelling for data modelling of datwarehouse.why iE-R modelling is used for OLTP systemsDimesional modelling for data modelling of datwarehouse.why is this so.what is the difference between E-R modelling and dimesional modelling.thank in advance.

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302. what is the difference between connected stored procedure and unconnected stored procedure?

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Asked by: ram gopal

Latest Answer: Connected stored procedure will execute when each row passed through the mapping then it will e... Last Updated By srinuv_11 on November 15, 2006


303. Wat is QTP in Data Warehousing? Subscribe

Asked by: Deeprekha

Latest Answer: I think this question is belongs to congnos.... Last Updated By srinuv_11 on November 15, 2006


304. What are the questions asked in PDM Round(Final Hr round) Subscribe

Asked by: Deeprekha

Latest Answer: We can't say which questions asking in which round that will depending on the interviewer. In ... Last Updated By srinuv_11 on November 14, 2006


305. what is a transforamation? Subscribe

It is a repostitory object that generates,modifies or passes data. Latest Answer: Transformation is a repository object of converting a given input to desired output.It can generates... Last Updated By bibhu on November 10, 2006


306. How do you create single lookup transformation using multiple tables? Subscribe

Asked by: C.Ravi

Latest Answer: If you want single lookup values to be used in multiple target tables this can be done !!!For t... Last Updated By Informatica_buddy on November 10, 2006


307. How do we load from PL/SQL script into Informatica mapping? Subscribe




































Asked by: adarsh

Latest Answer: You can actually create a view and import it as source in mapping ....... Last Updated By informatica_buddy on November 10, 2006


308. what is grouped cross tab? Subscribe

Asked by: sharat

Latest Answer: its one kind of report. generally we will use this one in cognos... Last Updated By calltomadhu on November 09, 2006


309. How to import oracle sequence into Informatica. Subscribe

Asked by: Hareesh

Latest Answer: Hi sunil,I got a problem with this...Can you jsut tell me a procedure to generate sequence number in... Last Updated By deepika on November 08, 2006


310. what is the procedure to write the query to list the highest salary of three employees?

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Latest Answer: You can write the query as follows.SQL> select * from 2 (select ename,sal from emp order by sal de... Last Updated By Neeraj on November 07, 2006


311. what are the differences between informatica6.1 and informatica7.1 Subscribe

Asked by: chinna

Latest Answer: in informatica7.11. we can take flatfile as a target 2.flatfile as lookup table3.data... Last Updated By sivaprasad on November 07, 2006


312. what is the diff b/w STOP & ABORT in INFORMATICA sess level ? Subscribe

Asked by: sitharam

Latest Answer: Stop : After issuing stop PCS processes all those records which it got from source qualifier and wri... Last Updated By MAni on November 07, 2006


313. what is E-R modelling and why is it used for OLTP designwhat is dimesional modelling and why is itwhat is E-R modelling and why is it used for OLTP designwhat is dimesional modelling and why is it used for datawarehouse desgn

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314. HOw do u select duplicate rows using informatica? Subscribe

Asked by: phanimv

Latest Answer: we can aso use sorter transfermation.seect distinct one check box.... Last Updated By sravan on November 04, 2006


315. What is target load order ? Subscribe

Asked by: srinu

Latest Answer: Target oad pan specifies the order in which the data being extracted from the source qualifier.... Last Updated By sravan on November 04, 2006


316. What TOAD and for what purpose it will be used? Subscribe

Asked by: sri


































Latest Answer: Toad is a application development tool built around an advanced SQL and PL/SQL editor. Using Toad, y... Last Updated By pushpam on November 03, 2006


317. How to extract 10 records out of 100 records in a flat file Subscribe

Asked by: vijay

Latest Answer: hi,For falt file sourecsource--sq--sequence generator tran.on new fileld id--filter tran. id<... Last Updated By afzal on November 03, 2006


318. What is user defined Transformation? Subscribe

Asked by: channu

Latest Answer: User Defined Transformations Are Stored Procedure and Sourcr Qualifier ... Last Updated By n k rajkumar on November 02, 2006


319. how to get two targets T1 containing distinct values and T2 containing duplicate values from one sohow to get two targets T1 containing distinct values and T2 containing duplicate values from one source S1.

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Asked by: sameer


320. When do u use a unconnected lookup and connected lookup....what is the difference between dynamic aWhen do u use a unconnected lookup and connected lookup....what is the difference between dynamic and static lookup...y and when do v use these types of lookups ( ie...dynamic and static )

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Asked by: Uday


321. What are the common errors that you face daily? Subscribe


Latest Answer: mostly we are geting oracle fatal error.whilw the server is not able to connect the oracle server.... Last Updated By shiva on October 30, 2006


322. Target file has duplicate records, eventhough the source tables has single records. Selecting data Target file has duplicate records, eventhough the source tables has single records. Selecting data from 5 different SQL tables using the user defined join.

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Asked by: suja


323. What Bulk & Normal load? Where we use Bulk and where Normal? Subscribe


Latest Answer: Bulk mode is used for Oracle/SQLserver/Sybase. This mode improves performance by not writing t... Last Updated By sn3508 on October 26, 2006


324. while Running a Session, what are the two files it will create? Subscribe

Asked by: channu

Latest Answer: Besides session log, it also creates the following files if applicable - reject files, target output... Last Updated By sn3508 on October 26, 2006


325. Can we use lookup instead of join? reason Subscribe

Asked by: sravan





































Latest Answer: If the relationship to other table is a one to one join or many to one join then we can u... Last Updated By sn3508 on October 26, 2006


326. What is JMS and what is the relation between powerconnect and JMS? Subscribe

Asked by: Srinivas


327. what is surrogate key ? how many surrogate key used in ur dimensions? Subscribe

Asked by: sugu

Latest Answer: Surrogate key or warehouse key acts like a composite primary key. If the target doesn't have a... Last Updated By sn3508 on October 25, 2006


328. in which particular situation we use dynamic lookup? Subscribe

Asked by: shahjahan

Latest Answer: If the no. of records are in hundreds, one doesn't see much difference whether a static cache is use... Last Updated By sn3508 on October 25, 2006


329. Is it possible to run one loading session with one particular target and multiple types of data souIs it possible to run one loading session with one particular target and multiple types of data sources?

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330. How to load data to target where the source and targets are XML'S? Subscribe

Asked by: ramana

Latest Answer: If you don't have the structures, create the Source or Target structure of the XML file by goin... Last Updated By sn3508 on October 25, 2006


331. Can we create duplicate rows in star schema? Subscribe


Latest Answer: Duplicate row has nothing to do with StarSchema. StarSchema is mathodoly and Duplicate row is part o... Last Updated By Ashwani on October 25, 2006


332. what happens if the informatica server doesn't find the session parameter in the parameter filwhat happens if the informatica server doesn't find the session parameter in the parameter file?

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333. How to call stored Procedure from Workflow monitor in Informatica 7.1 version Subscribe

Asked by: rajbei

Latest Answer: Call stored procedure using a shell script.Invoke that shell script using command task with pmcmd.... Last Updated By Prasanth on October 19, 2006


334. what r the types of target loads Subscribe

Asked by: sravan

Latest Answer: There are two types of target load typesthey are1. bulk2. normal... Last Updated By n k rajkumar on October 18, 2006


335. what is suggested method for validating fields/marking them with errors? Subscribe

Asked by: phanimv











































336. In a flat file sql override will work r not? what is the extension of flatfile. Subscribe

Asked by: sravan

Latest Answer: Using flat files sql override willnot work. the extension of the flat files are .txt,.doc,.dat and t... Last Updated By phanimv on October 18, 2006


337. is there any relationship between java & inforematica? Subscribe

Asked by: shahjahan

Latest Answer: Like java, informatica is a plat-form independent, portable and architechtural nutral.... Last Updated By phanimv on October 18, 2006


338. 1. what is DTM process?2. what r the output files that informatica creates during the session runni1. what is DTM process?2. what r the output files that informatica creates during the session running?3. limitations of joiner transformations?under which conditions we can't use joiner transformation?

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Asked by: anu


339. what r the advantages and disadvantagesof a star schema and snoflake schema.thanks in advance.

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Asked by: elektra

Latest Answer: Main advantage in starschema1)it supports drilling and drill down options2)fewer tables3)less databa... Last Updated By ravi guturi on October 17, 2006


340. How many types of flatfiles available in Informatica? Subscribe

Asked by: shinysakthi

Latest Answer: Thank you very much Subbarao..... Last Updated By Sakthivel on October 17, 2006


341. Where persistent cache will be stored? Subscribe


Latest Answer: presistent cache stored in the server folder... Last Updated By kareem on October 16, 2006


342. WHAT IS THE DIFFERENCE BETWEEN LOGICAL DESIGN AND PHYSICAL DESIGN INA DATAWAREHOUSE

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Asked by: shilpa

Latest Answer: During the logical design phase, you defined a model for your data warehouse consisting of entities,... Last Updated By Anonymous on October 13, 2006


343. what is the difference between constraind base load ordering and target load plan Subscribe

Asked by: vijay kumar

Latest Answer: Constraint based loading : If your mapping contains single pipeline(flow) with morethan one&nbs... Last Updated By kjs on October 13, 2006


344. Architectural diff b/w informatica 7.1 and 5.1? Subscribe

Asked by: jayasreered

Latest Answer: 1. v7 has repository server & pmserver, v5 had pmserver only. pmserver does not directly talks t... Last Updated By zskhan on October 12, 2006








































345. What r the different threads in DTM process? Subscribe

Master thread: Creates and manages all other threads Maping thread: One maping thread will be creates for each session.Fectchs session and maping information. Pre and post session threads: This will b Latest Answer: Yupz this make sense ! =)... Last Updated By Killer on October 12, 2006


346. what is cost effective transformation b/w lookup and joiner Subscribe

Asked by: sravan

Latest Answer: Are you lookuping flat file or database table? Generaly, sorted joiner is more efective on flat file... Last Updated By Myk on October 11, 2006


347. Why did you use stored procedure in your ETL Application? Subscribe

Asked by: C.Ravi

Latest Answer: Hi , Using of stored procedures plays important role.Suppose ur using oracle database where ur ... Last Updated By lingesh on October 11, 2006


348. What is the difference between PowerCenter 6 and powercenter 7? Subscribe

Asked by: sjigars

Latest Answer: in 7.x it have the more feature compare to 6.x liketransaction cotrol transformationunion transforma... Last Updated By srinivas vadlakonda on October 11, 2006


349. Explain in detail about Key Range & Round Robin partition with an example. Subscribe

Asked by: Kavitha

Latest Answer: key range: The informatica server distributes the rows of data based on the st of ports that u speci... Last Updated By srinivas vadlakonda on October 11, 2006


350. what are the transformations that restrict the partitioning of sessions? Subscribe

*Advanced External procedure transformation and External procedure transformation: This Transformation contains a check box on the properties tab to allow partitioning.*Aggregator Transformation: If y Asked by: satyaneerumalla

Latest Answer: Advanced External procedure transformation and External procedure transformation: This Transformatio... Last Updated By srinivas vadlakonda on October 11, 2006


351. give me an scenario where flat files are used? Subscribe

Asked by: jayasreered

Latest Answer: Hi Flat files have some advantages which normal table does not have. First one is explained by first... Last Updated By Kapil on October 11, 2006


352. what is the use of Factless Facttable? Subscribe

Asked by: channu

Latest Answer: transaction can occur without the measure fore example victim id... Last Updated By srinivas vadlakonda on October 11, 2006


353. IS Router Transformation Active or Passive?Desc: RouT pass the rows by checking the condetion but IS Router Transformation Active or Passive?Desc: RouT pass the rows by checking the condetion but it never Rejects( Rejected Rows in Default target). so how ll u say it is active............plz send me the in detail, with pleasures. [email protected]

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Asked by: channu


354. what r the types of data flows in workflow manager Subscribe

Asked by: sravan

Latest Answer: Types of dataflows1.sequential execution.2.paralal execution3.control flow execution... Last Updated By sravangopisetty on October 10, 2006


355. In workflow can we send multiple email ? Subscribe

Asked by: joechacko

Latest Answer: Yes, only on the UNIX version of Workflow and not Windows based version.... Last Updated By WMC on October 09, 2006


356. what is lookup transformation and update strategy transformation and explain with an example.Thankswhat is lookup transformation and update strategy transformation and explain with an example.Thanks in Advance

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Asked by: DWHLearner


357. Is it possible to refresh the Materialized view? Subscribe


Latest Answer: Yaa we can refresh materialized view. While creating of materialized views we can give options ... Last Updated By lingesh on October 05, 2006


358. what is difference between COM & DCOM? Subscribe

Asked by: dwhprofessional

Latest Answer: Hai,COM is technology developed by Microsoft which is based on OO Design .COM Componenet... Last Updated By balaji on October 05, 2006


359. Where we use Star Schema & where Snowflake? Subscribe


Latest Answer: its depends for client requirements.initially we have implementÂ high level designÂ .so,the client w... Last Updated By Raj on October 05, 2006


360. At what frequent u load the data? Subscribe


Latest Answer: Loading frequency depends on the requirement of Business Users, It could be daily during mid n... Last Updated By opbang on October 04, 2006


361. What is Shortcut? What is use of it? Subscribe


Latest Answer: Shortcut is a facility providing by informatica to share metadata objects across folders without cop... Last Updated By Vamsi Krishna K. on October 03, 2006


362. COMMITS: What is the use of Source-based commits ? PLease tell with an example ?

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Latest Answer: if you selected commit type is target, once the cache is holding some 10000 records server will comm... Last Updated By Vamsi Krishna.K on October 01, 2006


363. What is SQL override? In which transformation we use override? Subscribe


Latest Answer: Hello,By default informatica server will generate sql query for every action, if that query is not a... Last Updated By Vamsi Krishna.K on October 01, 2006


364. Can you update the Target table? Subscribe


Latest Answer: hello,we have to update target table. if you are loading type-1 dimension,type-2 dimension data at t... Last Updated By Vamsi Krishna.K on October 01, 2006


365. How to Generate the Metadata Reports in Informatica? Subscribe

Asked by: Venkatesan

Latest Answer: yes, we can generate reports using Metadata Reporter... It is a web based application used only for ... Last Updated By kumar on September 28, 2006


366. While importing the relational source definition from database, what are the meta data of source U While importing the relational source definition from database, what are the meta data of source U import?

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Source name Database location Column names Datatypes Key constraints (Answers: 1) Read / Answer

367. What is the use of incremental aggregation? Explain me in brief with an example. Subscribe


Latest Answer: Incremental aggregation is in session properties i have 500 records in my source and again i got 300... Last Updated By srinivas vadlakonda on September 28, 2006


368. what is difference between dimention table and fact table and what are different dimention tables awhat is difference between dimention table and fact table and what are different dimention tables and fact tables

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Asked by: chim


369. how to create a custom transformation, can u give a realtime example where exactly u have used it. how to create a custom transformation, can u give a realtime example where exactly u have used it. just give some explanation why u used the custom transformation.thx in advance

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370. How do we do complex mapping by using flatfiles / relational database? Subscribe

Asked by: brahamaiah.g

Latest Answer: if we are using more business reules or more transformations then it is called complex mapping. If w... Last Updated By srinivas on September 28, 2006


371. if source qualifier having employee details.the empid is in 5th placle and deptno is Subscribe


































in 7th column if source qualifier having employee details.the empid is in 5th placle and deptno is in 7th column then. u selected sort by 2. but how the informatica server will come know that those r the fields to sort.

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372. What is CDC? Subscribe

Asked by: vinoth

Latest Answer: Whenever any source data is changed we need to capture it in the target system also this can be basi... Last Updated By kusum on September 27, 2006


373. If u had to split the source level key going into two seperate tables. One as surrogate and other aIf u had to split the source level key going into two seperate tables. One as surrogate and other as primary. Since informatica does not gurantee keys are loaded properly(order!) into those tables. What are the different ways you could handle this type of situation?

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Asked by: kalam


374. What is the differance between Local and Global repositary? Subscribe

Asked by: Srinivas.K

Latest Answer: You can develop global and local repositories to share metadata: Global repository. The global repos... Last Updated By opbang on September 26, 2006


375. what is bottleneck in informatica? Subscribe

Asked by: nalini

Latest Answer: Bottleneck in Informatica Bottleneck in ETL Processing is the point, by which the ... Last Updated By opbang on September 26, 2006


376. I am working on Infromatica. I want to do Certification in Infromatica designer. Can anybody pleaseI am working on Infromatica. I want to do Certification in Infromatica designer. Can anybody please suggest me on how to start?

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Asked by: Madhav


377. How can you say that union Transormation is Active transformation. Subscribe

Asked by: manasa

Latest Answer: Hi, Union also Active tranformation.because it eliminates duplicate ro... Last Updated By Ravi on September 25, 2006


378. what is the basic language of informatica? Subscribe

Asked by: raj_badarla

Latest Answer: The basic language of Informatica is SQL plus.Then only it will under stand the data base language.... Last Updated By Sravan Gopisetty on September 24, 2006


379. what is Partitioning ? where we can use Partition? wht is advantages?Is it nessisary?

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Asked by: jaya krishna G

Latest Answer: hi nimmi please explain me regarding complete partition. I need clear picture. what tranmission it w... Last Updated By madhu on


































September 23, 2006

380. how do we load data by using period dimension? Subscribe

Asked by: brahmaiah.g

Latest Answer: hi,its very simple thourgh sheduleingthanksmadhu... Last Updated By calltomadhu on September 23, 2006


381. How can you improve the performance of Aggregate transformation? Subscribe

Asked by: vr

Latest Answer: Hi,we can improve the aggrifation performance by doing like this.create group by condition only on n... Last Updated By calltomadhu on September 23, 2006


382. why did u use update stategy in your application? Subscribe

Asked by: C.Ravi

Latest Answer: to perform dml operationsthanksmadhu... Last Updated By calltomadhu on September 23, 2006


383. In update strategy target table or flat file which gives more performance ? why? Subscribe

Asked by: C.Ravi

Latest Answer: hi faltfile give more performance.beacause there is no index cosept and there is no constraints... Last Updated By calltomadhu on September 23, 2006


384. 1) How to load the data (like refresh load, quarterly load, hourly load etc)2) what is lookup ?1) How to load the data (like refresh load, quarterly load, hourly load etc)2) what is lookup ? (Lookup is a join is it wright or wrong)ub

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385. What is the difference between materialized view and a data mart? Are they same? Subscribe

Asked by: gnaneswarkumar

Latest Answer: hi view direct connect to tableit wont contain data and what we ask it will fire on table and give t... Last Updated By calltomadhu on September 23, 2006


386. What about rapidly changing dimensions?Can u analyze with an example? Subscribe

Asked by: siva

Latest Answer: hiquestion itself there that data is quite freequently changing. Changing means it can be modify or ... Last Updated By calltomadhu on September 22, 2006


387. Wht is incremental loading?Wht is versioning in 7.1? Subscribe

Asked by: vinoth

Latest Answer: Hi,Please see the incremental loding answer in CDC. Now i will tell you about versioning.Simply if a... Last Updated By calltomadhu on September 22, 2006


388. what are the type costing functions in informatica Subscribe

Asked by: praveenmanne

Latest Answer: question was not clear can u repeat this question with full descritpion because there is no specific... Last Updated By calltomadhu on September 22, 2006








































389. what is the repository agent? Subscribe

Asked by: kishore

Latest Answer: Hi,Name itself it is saying that agent means meadiator between and repositary server and reposatary ... Last Updated By calltomadhu on September 22, 2006


390. what r the mapping specifications? how versionzing of repository objects? Subscribe

Asked by: Bhanu

Latest Answer: himapping is nothing but flow or work. where the data is coming and where data is going. for this we... Last Updated By calltomadhu on September 22, 2006


391. Can any one please tell me the architecture of Informatica and please tell me the flow of data in ICan any one please tell me the architecture of Informatica and please tell me the flow of data in Iinformatica?

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Asked by: sunkuru govinda


392. what is the exact meaning of domain? Subscribe

Asked by: venkatesh

Latest Answer: In Database parlance you can define a domain " a set of all possible permissible values for any attr... Last Updated By Abhik on September 21, 2006


393. 1.can u explain one critical mapping?2.performance issue which one is better? whether connected loo1.can u explain one critical mapping?2.performance issue which one is better? whether connected lookup tranformation or unconnected one?

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Asked by: esawr


394. can we eliminate duplicate rows by using filter and router transformation ?if so explain me in detacan we eliminate duplicate rows by using filter and router transformation ?if so explain me in detail .

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Asked by: retech


395. what are the difference between view and materialized view? Subscribe

Asked by: sarath

Latest Answer: DMLs can be used against view (if they are based on 1 table with no aggr funs)... Last Updated By Shekhar Pandit on September 15, 2006


396. Differences between connected and unconnected lookup? Subscribe

Connected lookupUnconnected lookup Receives input values diectly from the pipe line.Receives input values from the result of a lkp expression in a another transformation.U can use a dynamic or s Latest Answer: Hi Differences Between Connected and Unconnected LookupsConnected LookupUnconnected LookupRecei... Last Updated By Shivat on September 13, 2006


397. What is Transaction? Subscribe

Asked by: Srinu

Latest Answer: Hi, Transaction is any event that indicates some action. &n... Last Updated By irfan on




































September 08, 2006

398. What are Data driven Sessions? Subscribe

The informatica server follows instructions coded into update strategy transformations with in the session mapping to determine how to flag records for insert,update,delete or reject. If you do not ch Asked by: satyaneerumalla

Latest Answer: Once you load the data in your DW,you can update the new data with the following options in your ses... Last Updated By fazal on September 07, 2006


399. what is the architecture of any Data warehousing project? what is the flow? Subscribe

Asked by: kiran

Latest Answer: nice answer i have more doubts and can u give me ur mail id... Last Updated By parimikiran227 on August 31, 2006


400. How can I get distinct values while mapping in Informatica in insertion? Subscribe

Asked by: amu

Latest Answer: WellThere are two methods to get distinct values:If the sources are databases then we can go fo... Last Updated By MOHAN REDDY on August 27, 2006


401. whats the diff between Informatica powercenter server, repositoryserver and repository?

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Powercenter server contains the sheduled runs at which time data should load from source to target Repository contains all the definitions of the mappings done in designer. Asked by: ganesh

Latest Answer: power center server-power center server does the extraction from the source and loaded it to the tar... Last Updated By na123 on August 22, 2006


402. my source is having 1000 rows. i have brought 300 records into my ODS. so next time i want to load my source is having 1000 rows. i have brought 300 records into my ODS. so next time i want to load the remaining records. so i need to load from 301 th record. when ever i start the work flow again it will load from the begining. how do we solve this problem. thanks in advance kiran

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Asked by: kiran


403. what is surrogatekey ? In ur project in which situation u has used ? explain with example ?

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Asked by: sitharam

Latest Answer: Surrogate key is a Unique identifier for eatch row , it can be used as a primary key for DWH.The DWH... Last Updated By shiva on August 21, 2006


404. can we modify the data in flat file? Subscribe

Asked by: sarath

Latest Answer: You can generate a flat file with program....mean not manually.... Last Updated By Me_Raj on August 17, 2006


405. difference between summary filter and details filter? Subscribe

Asked by: sarath

Latest Answer: Will it be correct to say that Summary Filter ----> HAVING Clause in SQLDetails Filter -----... Last Updated By Amiyangshu Pal on August 17, 2006
































406. What is Datadriven? Subscribe

The informatica server follows instructions coded into update strategy transformations with in the session maping determine how to flag records for insert, update, delete or reject. If u do not choose Latest Answer: When Data driven option is selected in session properties it the code will consider the update strat... Last Updated By Girish on August 15, 2006


407. What is Data cleansing..? Subscribe

The process of finding and removing or correcting data that is incorrect, out-of-date, redundant, incomplete, or formatted incorrectly. Latest Answer: it means process of removing data inconsistancies and reducing data in accuracies... Last Updated By sunil on August 09, 2006


408. What is a view? How it is related to data independence?And what are the different types of views,anWhat is a view? How it is related to data independence?And what are the different types of views,and what is Materialize view

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Asked by: goutam


409. how u will create header and footer in target using informatica? Subscribe

Asked by: kk

Latest Answer: you can always create a header and a trailer in the target file using an aggregator transformation.T... Last Updated By varun joshi on August 07, 2006


410. What is the difference between PowerCenter 7 and PowerCenter 8? Subscribe

Asked by: sjigars

Latest Answer: the major difference is in 8 version some new transformations are added apart from these the remaini... Last Updated By satish on August 03, 2006


411. How to move the mapping from one database to another? Subscribe

Asked by: Shashank

Latest Answer: if we go by the direct meaning of your question....there is no need for a new mapping for a new data... Last Updated By vinay on July 24, 2006


412. What is change data capture? Subscribe

Asked by: manoj77ku

Latest Answer: Changed Data Capture (CDC) helps identify the data in the source system that has changed since the l... Last Updated By lathasurendar on July 23, 2006


413. how do we do unit testing in informatica?how do we load data in informatica ? Subscribe

Asked by: G.Brahmaiah

Latest Answer: Unit testing are of two types1. Quantitaive testing 2.Qualitative testingSteps.1.First validate the ... Last Updated By Praveen kumar on July 22, 2006


414. How to use the unconnected lookup i.e., from where the input has to be taken and the output is linkHow to use the unconnected lookup i.e., from where the input has to be taken and the output is linked?What condition is to be given?

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Asked by: ramesh


415. How to join two tables without using the Joiner Transformation. Subscribe


Latest Answer: hi,u can join 2 RDBMS sources of same database using a SQ by specifying user defined joins.u can als... Last Updated By prasadns26 on July 18, 2006


416. Can Informatica be used as a Cleansing Tool? If Yes, give example of transformations that can impleCan Informatica be used as a Cleansing Tool? If Yes, give example of transformations that can implement a data cleansing routine.

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417. How do you decide whether you need ti do aggregations at database level or at Informatica level?

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Latest Answer: hi,see informatica is basically a integration tool.it all depends on the source u have and ur requir... Last Updated By prasadns26 on July 18, 2006


418. How do we estimate the depth of the session scheduling queue? Where do we set the number of maximumHow do we estimate the depth of the session scheduling queue? Where do we set the number of maximum concurrent sessions that Informatica can run at a given time?

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419. which is better among connected lookup and unconnected lookup transformations in informatica or anywhich is better among connected lookup and unconnected lookup transformations in informatica or any other ETL tool?

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Asked by: sarath


420. How to lookup the data on multiple tabels. Subscribe

Asked by: Srinu

Latest Answer: hi,what ever my friends have answered earlier is correct. to be more specific,if the two tables are ... Last Updated By prasadns26 on July 18, 2006


421. What is the procedure to load the fact table.Give in detail? Subscribe

Asked by: Amit

Latest Answer: hi,usually source records are looked up with the records in the dimension table.DIM tables are calle... Last Updated By prasadns26 on July 18, 2006


422. In a sequential Batch how can we stop single session? Subscribe

Asked by: Karthikeyan

Latest Answer: hi,we can stop it using PMCMD command or in the monitor right click on that perticular session and s... Last Updated By prasadns26 on July 18, 2006


423. How do you handle decimal places while importing a flatfile into informatica? Subscribe

Asked by: Kalam









































Latest Answer: hi,while importing flat file definetion just specify the scale for a neumaric data type. in the mapp... Last Updated By prasadns26 on July 18, 2006


424. With out using Updatestretagy and sessons options, how we can do the update our target table?

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Asked by: chandu

Latest Answer: hi,if ur database is teradata we can do it with a tpump or mload external loader.update override in ... Last Updated By prasadns26 on July 18, 2006


425. hello friends.Somebody ca explain me the 3 points:I want to Know :1) the differences between using hello friends.Somebody ca explain me the 3 points:I want to Know :1) the differences between using native and ODBC server-side databaseConnections2)Know the reason why to register a server to the repository is necessary3)Know the rules associated with transferring and sharing objects between folders. 4) Know the rules associated with transferring and sharing objects between repositoriesThank you.loulou

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Asked by: loulou


426. where do we use MQ series source qualifier, application multi group source qualifier. just give an where do we use MQ series source qualifier, application multi group source qualifier. just give an example for a better understandingthx in advance

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427. What is meant by Junk Attribute in Informatica? Subscribe

Asked by: dvdev

Latest Answer: Hi,In the requirment collection phase, all the attributes that are likely to be used in any dimensio... Last Updated By Prasad on July 14, 2006


428. 1)What are the various test procedures used to check whether the data is loaded in the backend, per1)What are the various test procedures used to check whether the data is loaded in the backend, performance of the mapping, and quality of the data loaded in INFORMATICA.2) What are the common problems developers face while ETL development

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Asked by: Albert


429. If you want to create indexes after the load process which transformation you choose?a) Filter TranIf you want to create indexes after the load process which transformation you choose?a) Filter Tranformationb) Aggregator Tranformationc) Stored procedure Tranformationd) Expression Tranformation

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Asked by: rrvathana


430. Where is the cache stored in informatica? Subscribe

Asked by: Srikanth

Latest Answer: Hi,Cache is stored in the Informatica server memory and over flowed data is stored on the disk in fi... Last Updated By Prasad on July 14, 2006

431. What will happen if you are using Update Strategy Transformation and your session is configured forWhat will happen if you are using Update Strategy Transformation and your session is configured for "insert"?What are the types of External Loader available with Informatica?If you have rank index for top 10. However if you pass only 5 records, what will be the output of such

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a Rank Transformation?

Asked by: Sumeet


432. how do u check the source for the latest records that are to be loaded into the target.i.e i have lhow do u check the source for the latest records that are to be loaded into the target.i.e i have loaded some records yesterday, today again the file has been populated with some more records today, so how do i find the records populated today.thanks in advance

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433. how can we join the tables if the tables have no primary and forien key relation and no matchig porhow can we join the tables if the tables have no primary and forien key relation and no matchig port to join?

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Asked by: kishore


434. if the workflow has 5 session and running sequentially and 3rd session hasbeen failed how can we ruif the workflow has 5 session and running sequentially and 3rd session hasbeen failed how can we run again from only 3rd to 5th session?

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Asked by: kishore_2314


435. how can we use pmcmd command in a workflow or to run a session Subscribe

Asked by: dwh professional

Latest Answer: By using command task.... Last Updated By abc on July 14, 2006


436. Can u tell me how to go for SCD's and its types.Where do we use them mostly Subscribe

Asked by: kiran

Latest Answer: The "Slowly Changing Dimension" problem is a common one particular to data warehousing. In a nutshel... Last Updated By Sridhar.B on July 11, 2006


437. how is the union transformation active transformation? Subscribe

Asked by: retech

Latest Answer: Ya, Surely Lookup is a passive one... Last Updated By Motilal on July 11, 2006


438. why sorter transformation is an active transformation? Subscribe

Asked by: nandita

Latest Answer: If any transformation has the distinct option then it will be a active one,bec active transformation... Last Updated By bala on July 06, 2006


439. hi Gurus, I was working in SQL server, now i got an golden opertunity to work in INFORMATICA. I havhi Gurus, I was working in SQL server, now i got an golden opertunity to work in INFORMATICA. I have lots of (silly) Questions to build my Career, so pls guide me properly. I will ask lots of questions....What is the process flow of informatica, Thanks in advance

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Asked by: Ramesh


440. How to define Informatica server? Subscribe

Asked by: deep

Latest Answer: informatica server is the main server (Answers: 1) Read / Answer



































component in informatica product family..Which is resonsible f... Last Updated By deeprekha on July 06, 2006

441. Can we use aggregator/active transformation after update strategy transformation Subscribe

Asked by: ritesh kundu

Latest Answer: You can use aggregator after update strategy. The problem will be, once you perform the update strat... Last Updated By Shanmugam on July 05, 2006


442. Two relational tables are connected to SQ Trans,what are the possible errors it will be thrown?

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Asked by: chandu

Latest Answer: The only two possibilities as of I know isBoth the table should have primary key/foreign key relatio... Last Updated By Shanmugam on July 05, 2006


443. what is worklet and what use of worklet and in which situation we can use it Subscribe

Asked by: chim

Latest Answer: Worklet is reusable workflows. It might contain more than on task in it. We can use these worklets i... Last Updated By Shanmugam on July 05, 2006


444. can anyone explain about incremental aggregation with an example? Subscribe

Asked by: murali kancherla

Latest Answer: Incremental aggregation is specially used for tune the performance of the aggregator. It captures th... Last Updated By Shanmugam on July 05, 2006


445. Partitioning, Bitmap Indexing (when to use), how will the bitmap indexing will effect the performanPartitioning, Bitmap Indexing (when to use), how will the bitmap indexing will effect the performance

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446. 1]In certain mapping there are four targets tg1,tg2,tg3 and tg4.tg1 has a primary key,tg2 foreign k1]In certain mapping there are four targets tg1,tg2,tg3 and tg4.tg1 has a primary key,tg2 foreign key referencing the tg1's primary key,tg3 has primary key that tg2 and tg4 refers as foreign key,tg2 has foreign key referencing primary key of tg4 ,the order in which the informatica will load the target?2]How can I detect aggregate tranformation causing low performance?

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Asked by: afzal pathan


447. what is tracing level? Subscribe

Asked by: k

Latest Answer: Ya its the level of information storage in session log.The option comes in the properties tab of tra... Last Updated By Motilal on June 30, 2006


448. there are 3 depts in dept table and one with 100 people and 2nd with 5 and 3rd with some 30 and so.there are 3 depts in dept table and one with 100 people and 2nd with 5 and 3rd with some 30 and so. i want to diplay those deptno where more than 10 people exists

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449. what is rank transformation?where can we use this transformation? Subscribe

Asked by: rrvathana

Latest Answer: It is an active transformation which is used to identify the top and bottom values based on the nume... Last Updated By sandeep on June 29, 2006


450. How can we join 3 database like Flat File, Oracle, Db2 in Informatrica..Thanks in advance

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Asked by: Ravinder

Latest Answer: You have to use two joiner transformations.fIRST one will join two tables and the next one will join... Last Updated By reddy on June 29, 2006


451. Hi,In Power Center 7.1.2 how can we take a Backup of a Versioned Repository such that I get a Non-VHi,In Power Center 7.1.2 how can we take a Backup of a Versioned Repository such that I get a Non-Versioned Repository when i restore it.I need a way to get a non-versioned repository from a versioned one.Creating a new Repository(Non-Versioned) and then copying all the folders is an option.But is there any other better way...?Thankyou in Advance..Reddy

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Asked by: reddy


452. What is difference between partioning of relatonal target and partitioning of file targets?

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If u parttion a session with a relational target informatica server creates multiple connections to the target database to write target data concurently.If u partition a session with a file target the Latest Answer: Could you please tell me how can we partition the session and target?... Last Updated By kareemuddin ahmed on June 25, 2006


453. hwo can we eliminate duplicate rows from flat file? Subscribe

Asked by: kishore

Latest Answer: to eliminate the duplicate in flatfiles, we have distinct property in sorter transformation. If we e... Last Updated By mootati raghavendroa reddy on June 23, 2006


454. How do we analyse the data at database level? Subscribe

Asked by: slrch

Latest Answer: Data can be viewed using Informatica's designer tool.If you want to view the data on source/tar... Last Updated By Uma Bojja on June 17, 2006


455. what is hash table informatica? Subscribe

Asked by: mootati raghavendroa reddy

Latest Answer: In hash partitioning, the Informatica Server uses a hash function to group rows of data among partit... Last Updated By karthikeyansp2003 on June 15, 2006


456. How to export mappings to the production environment? Subscribe

Asked by: kk

Latest Answer: In the designer go to the main menu and one can see the export/import options.Import the exported ma... Last Updated By UmaBojja on June 14, 2006


457. can any one tell me how to run scd1 bec it create two target tables in mapping Subscribe

































window and there arecan any one tell me how to run scd1 bec it create two target tables in mapping window and there are only one table in warehouse designer(means target).. so if we create one new table in target it gives error..thanks in advance

Asked by: ravi


458. In my source table 1000 rec's r there.I want to load 501 rec to 1000 rec into my Target table In my source table 1000 rec's r there.I want to load 501 rec to 1000 rec into my Target table ?how can u do this ?

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Asked by: sitharam


459. What are the properties should be notified when we connect the flat file source definition torelatiWhat are the properties should be notified when we connect the flat file source definition torelational database target definition?

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Asked by: rrvathana


460. I have a situation here to load the Table into informatica.I have 5 temporary tables as sources. ThI have a situation here to load the Table into informatica.I have 5 temporary tables as sources. They look like:Table1: (K - Key, N-Null, X,Y,Z - values)K1 X N N N NK2 X N N N N--------------------------Table2: K1 N X N N NK2 N X N N N--------------------------the other 3 tables are in the same way. But there can be a situation like any of the table can contain duplicates like:K1 X N N N NK1 Y N N N N--------

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Asked by: skymoon


461. what are the different types of transformation available in informatica. and what are the mostly uswhat are the different types of transformation available in informatica. and what are the mostly used ones among them

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Asked by: kiran


462. Can u generate reports in Informatcia? Subscribe

Yes. By using Metadata reporter we can generate reports in informatica. Latest Answer: can u pls tell me how generate metadata reports? ... Last Updated By premkumar on May 22, 2006


463. what does the expression n filter transformations do in Informatica Slowly growing target wizard?

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Asked by: mjk

Latest Answer: You can use the Expression transformation to calculate values in a single row before you write to th... Last Updated By suhas on May 19, 2006


464. How to view and Generate Metadata Reports(for a particular session would like to generate a report How to view and Generate Metadata Reports(for a particular session would like to generate a report which shows source table , source column and related target table , target column) in informatica?

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Asked by: Prem kumar


465. What is the diff b/w Stored Proc (DB level) & Stored proc trans (INFORMATICA Subscribe


































level) ?again why shouWhat is the diff b/w Stored Proc (DB level) & Stored proc trans (INFORMATICA level) ?again why should we use SP trans ?

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466. Which tool U use to create and manage sessions and batches and to monitor and stop the informatica Which tool U use to create and manage sessions and batches and to monitor and stop the informatica server?

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Informatica server manager. (Answers: 1) Read / Answer

467. What is meant by EDW? Subscribe

Asked by: Mootati Raghavendroa Reddy

Latest Answer: EDW is Enterprise Datawarehouse which means that its a centralised DW for the whole organization.thi... Last Updated By yugandhar.bo on May 15, 2006


468. what are the measure objects Subscribe

Asked by: raghavendroa

Latest Answer: Aggregate calculation like sum,avg,max,min these are the measure objetcs.... Last Updated By karthikeyan on May 15, 2006


469. what are the real time problems generally come up while doing/running mapping/any transformation?cwhat are the real time problems generally come up while doing/running mapping/any transformation?can any body explain with example.

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Asked by: swati


470. how to load the data from people soft hrm to people soft erm using informatica? Subscribe

Asked by: suri

Latest Answer: Following are necessary1.Power Connect license 2.Import the source and target from people soft using... Last Updated By Uma Bojja on May 08, 2006


471. can batches be copied/stopped from server manager? Subscribe

Asked by: swati

Latest Answer: yes, we can stop the batches using server manager or pmcmd commnad... Last Updated By MOOTATI RAGHAVENDROA REDDY on May 08, 2006


472. Can Informatica load heterogeneous targets from heterogeneous sources? Subscribe


Latest Answer: yes, informatica for load the data form the heterogineous sources to heterogeneous t... Last Updated By Mahesh on May 05, 2006


473. What is exact use of 'Online' and 'Offline' server connect Options while definiWhat is exact use of 'Online' and 'Offline' server connect Options while defining Work flow in Work flow monitor? . The system hangs when 'Online' server connect option. The Informatica is installed on a Personal laptop.

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Asked by: Manivel


474. while running multiple session in parallel which loads data in the same table, Subscribe



































throughput of each swhile running multiple session in parallel which loads data in the same table, throughput of each session becomes very less and almost same for each session. How can we improve the performance (throughput) in such cases?

Asked by: Vijay Rohilla


475. what are the enhancements made to Informatica 7.1.1 version when compared to 6.2.2 version?

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Asked by: kishore.s

Latest Answer: 1.union & custom transformation2.lookup on flatfile3.we can use pmcmd command4.we can export ind... Last Updated By raghavendroa on May 03, 2006


476. explain use of update strategy transformation Subscribe

Asked by: fakhruddin

Latest Answer: To flag source records as INSERT, DELETE, UPDATE or REJECT for target database. Default flag is In... Last Updated By kalyan on May 02, 2006


477. what is polling? Subscribe

It displays update information about the session in the monitor window. Asked by: sekhar

Latest Answer: It displays the updated information about the session in the monitor window. The monitor window disp... Last Updated By kalyan on May 02, 2006


478. what is the difference between stop and abort Subscribe

Asked by: sriman

Latest Answer: Stop: In this case data query from source databases is stopped immediately but whatever data ... Last Updated By kalyan on May 01, 2006


479. How can you delete duplicate rows with out using Dynamic Lookup? Tell me any other ways using lookuHow can you delete duplicate rows with out using Dynamic Lookup? Tell me any other ways using lookup delete the duplicate rows?

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Asked by: appireddy


480. Could anyone please tell me what are the steps required for type2 dimension/version data mapping. hCould anyone please tell me what are the steps required for type2 dimension/version data mapping. how can we implement it

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Asked by: mani


481. what is the mapping for unit testing in Informatica, are there any other testings in Informatica, awhat is the mapping for unit testing in Informatica, are there any other testings in Informatica, and how we will do them as a etl developer. how do the testing people will do testing are there any specific tools for testing

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482. Explain the informatica Architecture in detail Subscribe

Latest Answer: repository←Repository→Repository ser.adm. control &nb... Last Updated By swati on



































April 17, 2006

483. what happens if you try to create a shortcut to a non-shared folder? Subscribe

Asked by: rrvathana

Latest Answer: It only creates a copy of it..... Last Updated By sunil_reddy on April 14, 2006


484. In a joiner trasformation, you should specify the source with fewer rows as the master source. Why?

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Asked by: rrvathana

Latest Answer: Joiner transformation compares each row of the master source against the detail source. The fewer un... Last Updated By sunil_reddy on April 14, 2006


485. What are the various test procedures used to check whether the data is loaded in the backend, perfoWhat are the various test procedures used to check whether the data is loaded in the backend, performance of the mapping, and quality of the data loaded in INFORMATICA.

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Asked by: Albert


486. what are mapping parameters and varibles in which situation we can use it Subscribe

Asked by: chim

Latest Answer: How can you edit the parameter file? Once you setup a mapping variable how can you define them in a ... Last Updated By Arvind on April 11, 2006


487. Talk about the Kimball vs. Inmon approaches.Talk about the concepts of ODS and information factory.Talk about the Kimball vs. Inmon approaches.Talk about the concepts of ODS and information factory.Talk about challenges of real-time load processing vs. batch.

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488. Waht are main advantages and purpose of using Normalizer Transformation in Informatica?

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Latest Answer: vamshidhar,How do u convert rows to columns in Normalizer? could you explain us??Normally, its used ... Last Updated By sm1506 on April 08, 2006


489. Can any one explain real time complain mappings or complex transformations in Informatica.SpeciallyCan any one explain real time complain mappings or complex transformations in Informatica.Specially in Sales Domain.

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Asked by: Srinu


490. Difference between Rank and Dense Rank? Subscribe

Asked by: hai_malli

Latest Answer: Rank:12<--2nd position2<--3rd position45Same Rank is assigned to same totals/numbers. Rank is ... Last Updated By sm1506 on April 08, 2006


491. hi everyone,can anyone explain error handling in informatica with examples so that it will be easy hi everyone,can anyone explain error handling in informatica with examples so that it will be easy to explain the same in the interview.

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Asked by: vssaks


492. how do you create a mapping using multiple lookup transformation? Subscribe

Asked by: dwhprofessional

Latest Answer: Use unconnected lookup if same lookup repeats multiple times.... Last Updated By Neha on April 03, 2006


493. what is mystery dimention? Subscribe

Asked by: chandu

Latest Answer: Also known as Junk DimensionsMaking sense of the rogue fields in your fact table..Please read the ar... Last Updated By Naren on March 29, 2006


494. What is the default source option for update stratgey transformation? Subscribe

Data driven. Latest Answer: DATA DRIVEN... Last Updated By Gyaneshwar on March 28, 2006


495. At the max how many tranformations can be us in a mapping? Subscribe

Latest Answer: Always remember when designing a mapping: less for moredesign with the least number of transformatio... Last Updated By Ray on March 23, 2006


496. What is the difference between Narmal load and Bulk load? Subscribe

Latest Answer: also remember that not all databases support bulk loading. and bulk loading fails a session if your ... Last Updated By Ray on March 23, 2006


497. Can i use a session Bulk loading option that time can i make a recovery to the session?

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Asked by: appireddy

Latest Answer: no,why because in bulk load u wont create redo log file,when u normal load we create redo log file,b... Last Updated By suresh.ravirala on March 17, 2006


498. How do you configure mapping in informatica Subscribe

Asked by: nirmal

Latest Answer: You should configure the mapping with the least number of transformations and expressions to do the ... Last Updated By suresh on March 17, 2006


499. I have an requirement where in the columns names in a table (Table A) should appear in rows of targI have an requirement where in the columns names in a table (Table A) should appear in rows of target table (Table B) i.e. converting columns to rows. Is it possible through Informatica? If so, how?

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Asked by: baru


500. what is meant by complex mapping, Subscribe

Asked by: vamsi veeramachaneni

Latest Answer: Complex maping means involved in more logic and more business rules.Actually in my



































project comp... Last Updated By ravi kumar guturi on March 13, 2006

501. What is Micro Strategy? Why is it used for? Can any one explain in detail about it? Subscribe

Asked by: Sandhya

Latest Answer: Micro strategy is again an BI tool whicl is a HOLAP... u can create 2 dimensional report and also cu... Last Updated By kundan on March 11, 2006


502. what is a junk dimension Subscribe

Asked by: msrkanth

Latest Answer: A junk dimension is a used for constrain queary purpose based on text and flag values.Some times a f... Last Updated By ravi kumar guturi on March 10, 2006


503. What is data merging, data cleansing, sampling? Subscribe

Asked by: Vijayanand

Latest Answer: simply man,Cleansing:---TO identify and remove the retundacy and inconsistencysampling: just smaple ... Last Updated By ravi kumar guturi on March 08, 2006


504. what is difference b/w Informatica 7.1 and Abinitio Subscribe

Asked by: kiranreddy1234

Latest Answer: There is a lot of diffrence between informatica an Ab InitioIn Ab Initio we r using 3 parllalisimbut... Last Updated By ravi kumar guturi on March 08, 2006


505. Can i start and stop single session in concurent bstch? Subscribe

Asked by: appireddy

Latest Answer: ya shoor,Just right click on the particular session and going to recovery optionorby using event wai... Last Updated By ravi kumar guturi on March 08, 2006


506. Differences between Normalizer and Normalizer transformation. Subscribe

Asked by: kalam

Latest Answer: Normalizer: It is a transormation mainly using for cobol sources,it's change the rows into coloums a... Last Updated By ravi kumar guturi on March 08, 2006


507. Difference between static cache and dynamic cache Subscribe

Static cache Dynamic cache U can not insert or update the cacheU can insert rows into the cache as u pass to the target The informatic server returns a value from the lookup table or cache when the co Latest Answer: lets say for example your lookup table is your target table. So when you create the Lookup selectin... Last Updated By vp on March 06, 2006


508. How to perform a "Loop Scope / Loop condition" in an Informaticaprogram ? Give me few exaHow to perform a "Loop Scope / Loop condition" in an Informaticaprogram ? Give me few examples .

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Asked by: Joe


509. can we run a group of sessions without using workflow manager Subscribe





























Asked by: rajendar

Latest Answer: ya Its Posible using pmcmd Command with out using the workflow Manager run the group of session.as p... Last Updated By Reddy on March 06, 2006


510. what are cost based and rule based approaches and the difference Subscribe

Asked by: B.rajendar

Latest Answer: Cost based and rule based approaches are the optimization techniques which are used in related to da... Last Updated By Gayathri on March 02, 2006


511. What is the target load order? Subscribe

U specify the target loadorder based on source qualifiers in a maping.If u have the multiple source qualifiers connected to the multiple targets,U can designatethe order in which informatica server lo Latest Answer: A target load order group is the collection of source qualifiers, transformations, and targets linke... Last Updated By saritha on March 01, 2006


512. what are partition points? Subscribe

Asked by: B.rajendar

Latest Answer: Partition points mark the thread boundaries in a source pipeline and dividethe pipeline into stages.... Last Updated By saritha on March 01, 2006


513. what is difference between lookup cashe and unchashed lookup?Can i run the mapping with out startinwhat is difference between lookup cashe and unchashed lookup?Can i run the mapping with out starting the informatica server?

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Asked by: appireddy


514. hi all,can any one comment onsignificance of oracle 9i in informatica when compared to oracle 8 or hi all,can any one comment onsignificance of oracle 9i in informatica when compared to oracle 8 or 8i.i mean how is oracle 9i advantageous when compared to oracle 8 or 8i when used in informatica thanksKumar

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Asked by: vssaks


515. What is IQD file? Subscribe

Asked by: Vijayanand

Latest Answer: IQD file is nothing but Impromptu Query Definition.This file used for creating cubes in COGNOS Power... Last Updated By sathyanath.gopi on February 27, 2006


516. hy,I want to prepare a questionnaire. The details about it are as follows: -1. Identify a large comhy,I want to prepare a questionnaire. The details about it are as follows: -1. Identify a large company/organization that is a prime candidate for DWH project. (For example Telecommunication, an insurance company, banks, may be the prime candidate for this)2. Give at least four reasons for the selecting the organization.3. Prepare a questionnaire consisting of at least 15 non-trivial questions to collect requirements/information about the organization. This information is required to build data

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517. what is the best way to show metadata(number of rows at source, target and each transformation levewhat is the best way to show metadata(number of rows at source, target and each transformation level, error related data) in a report format

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Asked by: kalam


518. how to use mapping parameters and what is their use Subscribe

Asked by: Priti

Latest Answer: mapping parameters and variables make the use of mappings more flexible.and also it avoids creating ... Last Updated By madhu sudhan rao on February 19, 2006


519. How do I import VSAM files from source to target. Do I need a special plugin Subscribe

Asked by: kalam

Latest Answer: Hi,In mapping Designer we have direct option to import files from VSAM Navigation : Sources =&... Last Updated By Farid khan on February 17, 2006


520. What is batch and describe about types of batches? Subscribe

Grouping of session is known as batch.Batches r two types Sequential: Runs sessions one after the other Concurrent: Runs session at same time. If u have sessions with source-target dependencies u have Latest Answer: Batch--- is a group of any thing Different batches ----Different groups of different things.... Last Updated By sangroover on February 15, 2006


521. How the informatica server increases the session performance through partitioning the source?

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For a relational sources informatica server creates multiple connections for each parttion of a single source and extracts seperate range of data for each connection.Informatica server reads multiple Latest Answer: fine explanation... Last Updated By durga on February 13, 2006


522. What is the procedure or steps implementing versioning if you are already in version7.X. Any gotchaWhat is the procedure or steps implementing versioning if you are already in version7.X. Any gotcha\'s or precautions..

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Asked by: Kalam


523. Compare Data Warehousing Top-Down approach with Bottom-up approach Subscribe

Asked by: sarath

Latest Answer: Nothing wrong with any of these approaches. It all depends on your business requirements and what is... Last Updated By kalam on February 12, 2006


524. If you have four lookup tables in the workflow. How do you troubleshoot to improve performance?

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Asked by: Kalam

Latest Answer: there r many ways to improve the mapping which has multiple lookups.1) we can create an index for th... Last Updated By gazulas on
































February 12, 2006

525. If you are workflow is running slow in informatica. Where do you start trouble shooting and what arIf you are workflow is running slow in informatica. Where do you start trouble shooting and what are the steps you follow?

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Asked by: Kalam


526. How to retrive the records from a rejected file. explane with syntax or example Subscribe

Asked by: Srinu

Latest Answer: During the execution of workflow all the rejected rows will be... Last Updated By raja rajan on February 07, 2006


527. Can u copy the session to a different folder or repository? Subscribe

Yes. By using copy session wizard u can copy a session in a different folder or repository.But that target folder or repository should consists of mapping of that session. If target folder or reposito Latest Answer: In addition, you can copy the workflow from the Repository manager. This will automatically copy the... Last Updated By Prasanna on February 03, 2006


528. What r the options in the target session of update strategy transsformatioin? Subscribe

Insert Delete Update Update as update Update as insert Update esle insert Truncate table Latest Answer: Update as Insert:This option specified all the update records from source to be flagged as inserts i... Last Updated By Prasanna on February 03, 2006


529. How many ways you can update a relational source defintion and what r they? Subscribe

Two ways 1. Edit the definition 2. Reimport the defintion Latest Answer: in 2 ways we can do it 1) by reimport the source definition 2) by edit the source defin... Last Updated By gazulas on January 30, 2006


530. Discuss which is better among incremental load, Normal Load and Bulk load Subscribe

Asked by: sarathmandalapu

Latest Answer: if supported by the database bulk load can do the loading faster than normal load.(incremental... Last Updated By gazulas on January 29, 2006


531. In a filter expression we want to compare one date field with a db2 system field CURRENT DATE.Our SIn a filter expression we want to compare one date field with a db2 system field CURRENT DATE.Our Syntax: datefield = CURRENT DATE (we didn't define it by ports, its a system field ), but this is not valid (PMParser: Missing Operator)..Can someone help us. Thanks

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Asked by: Nadine Schwarz


532. how to create the staging area in your database Subscribe

client having database throught that data base u get all sources Asked by: ramana

Latest Answer: creating of staging tables/area is the work of data modellor/dba.just like " create table <... Last Updated By kishore on January 29, 2006


533. How can u work with remote database in informatica?did u work directly by using remote connections?How can u work with remote database in informatica?did u work directly by using remote

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connections?

To work with remote datasource u need to connect it with remote connections.But it is not preferable to work with that remote source directly by using remote connections .Instead u bring that source i


534. What is the difference between connected and unconnected stored procedures. Subscribe

Asked by: de_sachin

Latest Answer: Run a stored procedure before or after your session.Unconnected Run a stored procedure once dur... Last Updated By sithusithu on January 24, 2006


535. What r the tasks that source qualifier performs? Subscribe

Join data originating from same source data base. Filter records when the informatica server reads source data. Specify an outer join rather than the default inner join specify sorted records. Select Latest Answer: Join data originating from the same source database. You can join two or more tables with primary-fo... Last Updated By sithusithu on January 24, 2006


536. What r the types of groups in Router transformation? Subscribe

Input group Output group The designer copies property information from the input ports of the input group to create a set of output ports for each output group. Two types of output groups User defined Latest Answer: A Router transformation has the following types of groups: Input Output Input Group The Designer cop... Last Updated By sithusithu on January 23, 2006


537. Which transformation should u need while using the cobol sources as source defintions?

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Normalizer transformaiton which is used to normalize the data.Since cobol sources r oftenly consists of Denormailzed data. Latest Answer: Normalizer transformaitonCheers,Sithu... Last Updated By sithusithu on January 20, 2006


538. what r the settiings that u use to cofigure the joiner transformation? Subscribe

Master and detail source Type of join Condition of the join Latest Answer: Master and detail source Type of join Condition of the join the Joiner transformation supports... Last Updated By sithusithu on January 20, 2006


539. What are various types of Aggregation? Subscribe

Various types of aggregation are SUM, AVG, COUNT, MAX, MIN, FIRST, LAST, MEDIAN, PERCENTILE, STDDEV, and VARIANCE. Latest Answer: AVG COUNT FIRST LAST MAX MEDIAN MIN PERCENTILE STDDEV SUM VARIANCECheers,Sithu... Last Updated By sithusithu on January 19, 2006


540. Briefly explian the Versioning Concept in Power Center 7.1. Subscribe

Asked by: sri






























Latest Answer: When you create a version of a folder referenced by shortcuts, all shortcuts continue to reference t... Last Updated By sithusithu on January 19, 2006


541. What r the methods for creating reusable transforamtions? Subscribe

Two methods 1.Design it in the transformation developer. 2.Promote a standard transformation from the mapping designer.After U add a transformation to the mapping , U can promote it to the status of r Latest Answer: You can design using 2 methodsusing transformation developercreate normal one and promote it to reus... Last Updated By sithusithu on January 19, 2006


542. What r the join types in joiner transformation? Subscribe

Normal (Default) Master outer Detail outer Full outer Latest Answer: follw thisIn the Mapping Designer, choose Transformation-Create. Select the Joiner transformation. E... Last Updated By sithusithu on January 19, 2006


543. What is power center repository? Subscribe

The PowerCenter repository allows you to share metadata across repositories to create a data mart domain. In a data mart domain, you can create a single global repository to store metadata used across Latest Answer: Standalone repository. A repository that functions individually, unrelated and unconnected to other ... Last Updated By sithusithu on January 19, 2006


544. What r the types of metadata that stores in repository? Subscribe

Following r the types of metadata that stores in the repository Database connections Global objects Mappings Mapplets Multidimensional metadata Reusable transformations Sessions and batches Short cuts Latest Answer: Source definitions. Definitions of database objects (tables, views, synonyms) or files that provide ... Last Updated By sithusithu on January 19, 2006


545. What is parameter file? Subscribe

Parameter file is to define the values for parameters and variables used in a session.A parameter file is a file created by text editor such as word pad or notepad. U can define the following values i Latest Answer: When you start a workflow, you can optionally enter the directory and name of a parameter file. The ... Last Updated By sithusithu on January 19, 2006


546. Which transformation should we use to normalize the COBOL and relational sources?

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Normalizer Transformation. When U drag the COBOL source in to the mapping Designer workspace,the normalizer transformation automatically appears,creating input and output ports for every column in the Latest Answer: The Normalizer transformation normalizes records from COBOL and relational sources, allowing you to ... Last Updated By sithusithu





























on January 19, 2006

547. What is the Rankindex in Ranktransformation? Subscribe

The Designer automatically creates a RANKINDEX port for each Rank transformation. The Informatica Server uses the Rank Index port to store the ranking position for each record in a group. For example, Latest Answer: Based on which port you want generate Rank is known as rank port, the generated values are known as ... Last Updated By sithusithu on January 12, 2006


548. What r the types of maping in Getting Started Wizard? Subscribe

Simple Pass through maping : Loads a static fact or dimension table by inserting all rows. Use this mapping when you want to drop all existing data from your table before loading new data. Slowly Grow Latest Answer: 1. Simple Pass through2. Slowly Growing TargetCheers,Sithu... Last Updated By sithusithu on January 11, 2006


549. How do we estimate the number of partitons that a mapping really requires? Is it dependent on the mHow do we estimate the number of partitons that a mapping really requires? Is it dependent on the machine configuration?

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550. Define informatica repository? Subscribe

The Informatica repository is a relational database that stores information, or metadata, used by the Informatica Server and Client tools. Metadata can include information such as mappings describing Latest Answer: Infromatica Repository:The informatica repository is at the center of the informatica suite. You cre... Last Updated By sithusithu on January 10, 2006


551. which objects are required by the debugger to create a valid debug session? Subscribe

Asked by: hi

Latest Answer: Informatica Server Object is must.Cheers,Sithu... Last Updated By sithusithu on January 04, 2006


552. What r the different types of Type2 dimension maping? Subscribe

Type2 Dimension/Version Data Maping: In this maping the updated dimension in the source will gets inserted in target along with a new version number.And newly added dimension in source will inserted i Latest Answer: Type21. Version number2. Flag3.DateCheers,Sithu... Last Updated By sithusithu on January 04, 2006


553. How does the server recognise the source and target databases? Subscribe

Asked by: swati

Latest Answer: by using ODBC connection.if it is relational.if is flat file FTP connection..see we can make sure wi... Last Updated By reddeppa on January 01, 2006


554. What is the limit to the number of sources and targets you can have in a mapping Subscribe

Asked by: ramaiah































Latest Answer: there is one formula..no.of bloccks=0.9*( DTM buffer size/block size)*no.of partitions.here no.of bl... Last Updated By reddeppa on January 01, 2006


555. Suppose session is configured with commit interval of 10,000 rows and source has 50,000 rows. ExplaSuppose session is configured with commit interval of 10,000 rows and source has 50,000 rows. Explain the commit points for Source based commit and Target based commit. Assume appropriate value wherever required.

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556. Identifying bottlenecks in various components of Informatica and resolving them. Subscribe


Latest Answer: haiThe best way to find out bottlenecks is writing to flat file and see where the bottle neck ... Last Updated By kalyan on December 20, 2005


557. After draging the ports of three sources(sql server,oracle,informix) to a single source qualifier, After draging the ports of three sources(sql server,oracle,informix) to a single source qualifier, can u map these three ports directly to target?

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NO.Unless and until u join those three ports in source qualifier u cannot map them directly.


558. How the informatica server sorts the string values in Ranktransformation? Subscribe

When the informatica server runs in the ASCII data movement mode it sorts session data using Binary sortorder.If U configure the seeion to use a binary sort order,the informatica server caluculates th Latest Answer: When Informatica Server runs in UNICODE data movement mode ,then it uses the sort order c... Last Updated By phani on December 09, 2005


559. What is the difference between summary filter and detail filter Subscribe

Asked by: sarath

Latest Answer: summary filter can be applieid on a group of rows that contain a common value.where as detail filter... Last Updated By sir on November 23, 2005


560. How do you transfert the data from data warehouse to flatfile? Subscribe

Latest Answer: You can write a mapping with the flat file as a target using a DUMMY_CONNECTION. A flat file target ... Last Updated By paul luthra on November 09, 2005


561. What r the tasks that Loadmanger process will do? Subscribe

Manages the session and batch scheduling: Whe u start the informatica server the load maneger launches and queries the repository for a list of sessions configured to run on the informatica server.Whe Latest Answer: How can you determine, whether informatica server is running or not with out using event viewer by u... Last Updated By AnjiReddy on November 08, 2005




























562. what is a time dimension? give an example. Subscribe

Latest Answer: A TIME DIMENSION is a table that contains the detail information of the time at which a pa... Last Updated By Lenin on November 01, 2005


563. What r the types of data that passes between informatica server and stored procedure?

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3 types of data Input/Out put parameters Return Values Status code. (Answers: 0) Read / Answer

564. Why we use partitioning the session in informatica? Subscribe

Partitioning achieves the session performance by reducing the time period of reading the source and loading the data into target. Latest Answer: Performance can be improved by processing data in parallel in a single session by creating multiple ... Last Updated By khadarbasha on September 30, 2005


565. What are 2 modes of data movement in Informatica Server? Subscribe

The data movement mode depends on whether Informatica Server should process single byte or multi-byte character data. This mode selection can affect the enforcement of code page relationships and cod Latest Answer: the 2 modas areUnicode modeAscii mode... Last Updated By sangeetha on September 25, 2005


566. Diff between informatica repositry server & informatica server Subscribe

Latest Answer: Informatica Repository Server:It's manages connections to the repository from client application.&nb... Last Updated By Nagi R Anumandla on August 11, 2005


567. how can we partition a session in Informatica? Subscribe

Latest Answer: Download the Document... Last Updated By Kevin B on July 08, 2005


568. What is Load Manager? Subscribe

Comment posted by: Deb on 2005-06-08 00:56:53Ans: While running a Workflow,the PowerCenter Server uses the Load Manager process and the Data Transformation Manager Process (DTM) to run the workflow an Latest Answer: I am providing the answer which I have taken it from Informatica 7.1.1 manual, Ans: While... Last Updated By Deb on June 08, 2005


569. What is Code Page Compatibility? Subscribe

Compatibility between code pages is used for accurate data movement when the Informatica Sever runs in the Unicode data movement mode. If the code pages are identical, then there will not be any data


570. What is Code Page used for? Subscribe

Code Page is used to identify characters that might be in different languages. If you are importing Japanese data into mapping, u must select the Japanese code page of source





























data. (Answers: 0) Read / Answer

571. What r the rank caches? Subscribe

During the session ,the informatica server compares an inout row with rows in the datacache.If the input row out-ranks a stored row,the informatica server replaces the stored row with the input row.Th


572. What is the status code? Subscribe

Status code provides error handling for the informatica server during the session.The stored procedure issues a status code that notifies whether or not stored procedure completed sucessfully.This val


573. Describe two levels in which update strategy transformation sets? Subscribe

Within a session. When you configure a session, you can instruct the Informatica Server to either treat all records in the same way (for example, treat all records as inserts), or use instructions cod


574. What r the new features of the server manager in the informatica 5.0? Subscribe

U can use command line arguments for a session or batch.This allows U to change the values of session parameters,and mapping parameters and maping variables. Parallel data processing: This feature is


575. What is metadata reporter? Subscribe

It is a web based application that enables you to run reports againist repository metadata. With a meta data reporter,u can access information about U’r repository with out having knowledge of sql,tra


576. To achieve the session partition what r the necessary tasks u have to do? Subscribe

Configure the session to partition source data. Install the informatica server on a machine with multiple CPU’s.


577. Why u use repository connectivity? Subscribe

When u edit,schedule the sesion each time,informatica server directly communicates the repository to check whether or not the session and users r valid.All the metadata of sessions and mappings will b


578. What is DTM process? Subscribe

After the loadmanger performs validations for session,it creates the DTM process.DTM is to create and manage the threads that carry out the session tasks.I creates the master thread.Master thread crea


579. What r the data movement modes in informatcia? Subscribe

Datamovement modes determines how informatcia server handles the charector data.U choose the datamovement in the informatica server configuration settings.Two types of




























datamovement modes avialable in (Answers: 0) Read / Answer

580. What r the out put files that the informatica server creates during the session running?

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Informatica server log: Informatica server(on unix) creates a log for all status and error messages(default name: pm.server.log).It also creates an error log for error messages.These files will be cre


581. In which circumstances that informatica server creates Reject files? Subscribe

When it encounters the DD_Reject in update strategy transformation. Violates database constraint Filed in the rows was truncated or overflowed.


582. What is polling? Subscribe

It displays the updated information about the session in the monitor window. The monitor window displays the status of each session when U poll the informatica server


583. How many number of sessions that u can create in a batch? Subscribe

Any number of sessions. (Answers: 0) Read / Answer

584. When the informatica server marks that a batch is failed? Subscribe

If one of session is configured to "run if previous completes" and that previous session fails.


585. What is a command that used to run a batch? Subscribe

pmcmd is used to start a batch. (Answers: 0) Read / Answer

586. In a sequential batch can u run the session if previous session fails? Subscribe

Yes.By setting the option always runs the session. (Answers: 0) Read / Answer

587. Can u start a session inside a batch idividually? Subscribe

We can start our required session only in case of sequential batch.in case of concurrent batch we cant do like this.


588. What r the session parameters? Subscribe

Session parameters r like maping parameters,represent values U might want to change between sessions such as database connections or source files. Server manager also allows U to create userdefined se


589. How can u access the remote source into U’r session? Subscribe

Relational source: To acess relational source which is situated in a remote place ,u need to configure database connection to the datasource. FileSource : To access the remote source file U must confi


590. what r the transformations that restricts the partitioning of sessions? Subscribe



































Advanced External procedure tranformation and External procedure transformation: This transformation contains a check box on the properties tab to allow partitioning. Aggregator Transformation: If u u


591. What r the new features in Informatica 5.0? Subscribe

U can Debug U’r maping in maping designer U can view the work space over the entire screen The designer displays a new icon for a invalid mapings in the navigator window U can use a dynamic lookup cac


592. what is incremantal aggregation? Subscribe

When using incremental aggregation, you apply captured changes in the source to aggregate calculations in a session. If the source changes only incrementally and you can capture changes, you can confi


593. What r the scheduling options to run a sesion? Subscribe

U can shedule a session to run at a given time or intervel,or u can manually run the session. Different options of scheduling Run only on demand: server runs the session only when user starts session


594. What is difference between stored procedure transformation and external procedure transformation?

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In case of storedprocedure transformation procedure will be compiled and executed in a relational data source.U need data base connection to import the stored procedure in to u’r maping.Where as in ex


595. Explain about Recovering sessions? Subscribe

If you stop a session or if an error causes a session to stop, refer to the session and error logs to determine the cause of failure. Correct the errors, and then complete the session. The method you


596. Explain about perform recovery? Subscribe

When the Informatica Server starts a recovery session, it reads the OPB_SRVR_RECOVERY table and notes the row ID of the last row committed to the target database. The Informatica Server then reads all


597. How to recover the standalone session? Subscribe

A standalone session is a session that is not nested in a batch. If a standalone session fails, you can run recovery using a menu command or pmcmd. These options are not available for batched sessions


598. How can u recover the session in sequential batches? Subscribe

If you configure a session in a sequential batch to stop on failure, you can run recovery starting with the failed session. The Informatica Server completes the session and then runs the rest of the b



























599. How to recover sessions in concurrent batches? Subscribe

If multiple sessions in a concurrent batch fail, you might want to truncate all targets and run the batch again. However, if a session in a concurrent batch fails and the rest of the sessions complete


600. How can u complete unrcoverable sessions? Subscribe

Under certain circumstances, when a session does not complete, you need to truncate the target tables and run the session from the beginning. Run the session from the beginning when the Informatica Se


601. What r the circumstances that infromatica server results an unreciverable session? Subscribe

The source qualifier transformation does not use sorted ports. If u change the partition information after the initial session fails. Perform recovery is disabled in the informatica server configurati










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